HCG 10000 IU

HCG Peptide for Sale: The Glycoprotein Hormone That Triggers Gonadal Steroidogenesis

HCG peptide for sale is not a synthetic peptide in the conventional sense. Furthermore, this distinction matters because HCG peptide is a glycoprotein hormone composed of an alpha subunit identical to LH, FSH, and TSH, plus a unique beta subunit that confers receptor specificity. Because of this structure, HCG peptide binds the luteinizing hormone and chorionic gonadotropin receptor (LHCGR) with high affinity and stimulates testosterone synthesis in Leydig cells, estrogen production in ovarian granulosa cells, and spermatogenesis support through Sertoli cell signaling.

HCG peptide is FDA approved for fertility treatment under brand names including Pregnyl, Novarel, and Ovidrel. However, for research applications outside approved indications, HCG peptide is available under research-use-only terms. Researchers studying reproductive endocrinology, hypogonadism models, steroidogenesis pathways, and gonadal function use HCG peptide as the reference standard for LH receptor activation.

Pure Peptide Factory stocks research-grade hcg peptide for sale in 1000 IU, 2000 IU, 5000 IU, and 10000 IU vials with batch-specific HPLC verification, WHO International Standard bioassay potency confirmation, and domestic cold-chain shipping. Additionally, if your endocrinology or reproductive biology research program needs a clinically validated gonadotropin with documented receptor pharmacology, this compound is the one.

Why Researchers Buy HCG Peptide for Sale from Pure Peptide Factory

HCG Peptide for Sale Purity Documentation You Can Verify

HCG peptide is a heterodimeric glycoprotein with molecular weight approximately 36,700 Da. Its biological activity depends on correct folding, proper glycosylation, and intact alpha-beta subunit association. Denatured HCG peptide, aggregated oligomers, or free subunit contamination will produce variable receptor activation and unreliable steroidogenesis data. Therefore, every batch of hcg peptide for sale ships with a lot-specific HPLC chromatogram and bioactivity assay confirming potency against the WHO International Standard. Consequently, you can download the COA before you buy and compare it against published clinical reference data. No generic certificates.

Domestic Cold-Chain That Protects HCG Peptide Stability

HCG peptide is a protein hormone that degrades rapidly at room temperature. Moreover, glycosylated proteins are particularly sensitive to freeze-thaw cycles and thermal denaturation. For this reason, we ship hcg peptide for sale from domestic cold-storage with phase-change cooling. As a result, most orders arrive within 1 to 3 business days. International suppliers cannot guarantee that timeline or temperature integrity across customs and freight.

Four IU Configurations for Any Protocol Scale

HCG peptide for sale is available in 1000 IU, 2000 IU, 5000 IU, and 10000 IU vials. The 1000 IU and 2000 IU sizes suit cell culture studies, in vitro steroidogenesis assays, and pilot animal protocols. By contrast, the 5000 IU and 10000 IU vials support extended animal studies, institutional research programs, multi-cohort fertility models, and large-animal reproductive protocols including bovine and equine ovulation induction. Select the configuration that matches your protocol without splitting or overbuying.

Synthesis Logs Archived for 24 Months

Every batch of hcg peptide for sale is logged and archived. If your IRB or compliance office requests chain-of-custody documentation, it is ready before your compound arrives.

What Is HCG Peptide for Sale?

A Glycoprotein Hormone, Not a Synthetic Peptide

HCG peptide stands for human chorionic gonadotropin peptide. It is a heterodimeric glycoprotein hormone produced by syncytiotrophoblast cells during pregnancy and by certain germ cell tumors. Specifically, the hormone consists of two non-covalently linked subunits. The alpha subunit contains 92 amino acids and is identical to the alpha subunits of luteinizing hormone, follicle-stimulating hormone, and thyroid-stimulating hormone. Meanwhile, the beta subunit contains 145 amino acids and confers biological specificity to HCG peptide (1).

This structural homology with LH is mechanistically significant. HCG peptide for sale binds to the same LH/hCG receptor (LHCGR) on target cells but with higher affinity and longer half-life than native LH (approximately 24-36 hours versus approximately 20-30 minutes for LH). Notably, the prolonged half-life results from extensive glycosylation of the beta subunit C-terminal peptide, which protects against renal clearance. Consequently, HCG peptide produces sustained receptor activation that makes it valuable for research applications requiring prolonged gonadal stimulation without pulsatile administration.

Molecular Profile:

• Structure: Heterodimeric glycoprotein — alpha subunit (92 aa, ~14.5 kDa) + beta subunit (145 aa, ~22.2 kDa)
• Molecular Weight: ~36,700 Da
• CAS Number: 9002-61-3
• Classification: Glycoprotein hormone / gonadotropin
• Receptor: LH/hCG receptor (LHCGR)
• Half-life: 24 to 36 hours (biphasic: rapid distribution ~5 hours, slower elimination ~24 hours)
• Synonyms: Human chorionic gonadotropin, hCG, Pregnyl, Novarel, Ovidrel
• Clinical status: FDA approved for ovulation induction, hypogonadotropic hypogonadism, cryptorchidism

How HCG Peptide Works at the Cellular Level

HCG peptide operates through a well-characterized G protein-coupled receptor pathway. The hormone binds to LHCGR on target gonadal cells, activating adenylyl cyclase and increasing intracellular cAMP. This second messenger activates protein kinase A (PKA), which phosphorylates transcription factors including CREB and SF-1, and critically activates the steroidogenic acute regulatory protein (StAR). StAR then mediates the rate-limiting step in steroidogenesis: transporting cholesterol from the outer to the inner mitochondrial membrane, where CYP11A1 converts cholesterol to pregnenolone — the first step in the steroidogenic cascade that ultimately produces testosterone (2).

In Leydig cells, HCG peptide stimulates the full steroidogenic cascade while simultaneously maintaining Leydig cell viability through PI3K-Akt anti-apoptotic signaling. The result is sustained testosterone output that persists for 2-4 days after a single dose. In ovarian granulosa cells, the hormone triggers luteinization, progesterone synthesis, and final oocyte maturation — the mechanism underlying its use as an ovulation trigger. Furthermore, in Sertoli cells, HCG supports spermatogenesis indirectly through androgen-binding protein production, even though the peptide itself does not directly stimulate FSH receptors. Additionally, researchers who purchase hcg peptide for sale for pregnancy studies should note its critical role: it is the signal produced by the implanting blastocyst that maintains the corpus luteum and drives progesterone production during the first trimester. Without HCG, the corpus luteum regresses and early pregnancy fails. Therefore, researchers studying trophoblast invasion, maternal-fetal signaling, or fetal testicular Leydig cell development use this glycoprotein to model fundamental reproductive processes.

HCG Peptide Benefits: What Published Research Shows

Testosterone Synthesis and Leydig Cell Function

The primary research application for hcg peptide for sale is steroidogenesis. A landmark pharmacokinetic study demonstrated that subcutaneous administration of 5,000 IU HCG produces identical testosterone responses to intramuscular injection in healthy male volunteers. Peak serum drug concentration was delayed and half-life prolonged after subcutaneous injection, but testosterone, LH, and FSH responses were identical between routes (1). Additionally, intramuscular dosing provides better bioavailability than subcutaneous dosing in terms of area under the curve and maximum concentration, though bioavailability is significantly reduced in obese subjects regardless of route. Importantly, purified HCG administered subcutaneously produced significantly higher serum and follicular fluid levels compared with intramuscular administration in IVF patients, suggesting that formulation purity affects pharmacokinetics.

Fertility and Ovulation Induction Research

HCG peptide is FDA approved for inducing ovulation in women undergoing fertility treatment. In research contexts, it serves as the reference trigger for final oocyte maturation before retrieval. Studies show that 5,000 to 10,000 IU induces ovulation within 36 hours when follicles reach 15 to 18 mm diameter. Consequently, researchers studying IVF protocols, IUI timing, and ovarian stimulation use this hcg peptide for sale to standardize trigger protocols.

Cryptorchidism and Testicular Descent Models

HCG peptide stimulates testicular descent in cryptorchidism models through androgen-mediated mechanisms. Specifically, the hormone promotes gubernaculum regression and inguinal canal dilation, supporting research into pediatric endocrinology and developmental andrology. Moreover, the FDA has approved HCG for the treatment of prepubertal cryptorchidism, providing researchers with a clinically validated reference framework.

HPG Axis Recovery and Post-Suppression Research

After prolonged androgen exposure — whether through exogenous testosterone, anabolic steroid use, or GnRH agonist/antagonist therapy — the HPG axis is suppressed. Endogenous LH and FSH secretion may take weeks or months to recover spontaneously. HCG peptide for sale provides a direct research tool to study the kinetics of testicular recovery by directly stimulating the testes to produce testosterone, bypassing the suppressed pituitary entirely. As a result, researchers use HCG to measure Leydig cell responsiveness, track the timeline of spermatogenesis restoration, and investigate intratesticular testosterone concentrations during the recovery phase.

Hypogonadism and Hormone Replacement Research

In male hypogonadism research, HCG peptide stimulates endogenous testosterone production while preserving testicular volume and spermatogenesis. Unlike exogenous testosterone, which suppresses the hypothalamic-pituitary-gonadal axis, HCG peptide maintains intratesticular testosterone levels necessary for sperm production. Therefore, researchers studying alternatives to testosterone replacement therapy use hcg peptide for sale to model approaches that preserve fertility.

Cattle and Equine Reproductive Research

HCG is widely used in veterinary reproductive protocols. Bovine studies show that HCG administered at the time of artificial insemination improves corpus luteum function and conception rates. Equine research demonstrates that 1500-2500 IU HCG reliably induces ovulation within 36-48 hours in approximately 85% of mares, enabling timed breeding and embryo transfer. Notably, the 5000 IU and 10000 IU vial formats available as hcg peptide for sale match the doses used in published large-animal protocols.

CYP450 Enzyme Preservation Research

A lesser-known but valuable research application for this compound is its ability to preserve hepatic cytochrome P450 enzyme activity in gonadectomized rodent models. Orchidectomy reduces androgen-dependent CYP isoforms, and HCG maintains these enzymes at near-physiological levels by sustaining endogenous testicular testosterone production. Consequently, hcg peptide for sale proves valuable for studies where drug metabolism endpoints must be measured in long-term protocols and where exogenous testosterone replacement would introduce confounding variables.

HCG Injection Subcutaneous vs Intramuscular: What Research Shows

Two Routes, Different Pharmacokinetics

Researchers frequently ask whether HCG injection subcutaneous or intramuscular administration is superior. The answer depends on your research endpoints.

Feature	HCG Injection Subcutaneous	HCG Injection Intramuscular
Needle size	0.5 to 5/8 inch, 29-31 gauge	1 to 1.5 inch, 22-25 gauge
Injection depth	Into subcutaneous fat layer	Into muscle tissue
Absorption rate	Slower, more sustained	Faster, more rapid peak
Peak concentration	Delayed	Earlier
Half-life	Prolonged	Standard
Bioavailability (AUC)	Lower than IM in obese models	Higher AUC overall
Pain level	Minimal	Moderate
Best for studying	Sustained hormone profiles, patient compliance models	Acute response studies, bioavailability research

A prospective study in 24 healthy male volunteers found that subcutaneous application of 5,000 IU HCG is as effective as IM administration in terms of steroidogenesis. However, peak serum drug concentration was significantly delayed and half-life prolonged after SC injection. For researchers studying acute testosterone responses, IM may provide faster kinetics. For protocols modeling sustained profiles, SC offers equivalent efficacy with reduced discomfort. Researchers who purchase hcg peptide for sale can select either route depending on their pharmacokinetic endpoints (1).

How to Inject HCG Peptide: Step-by-Step Research Protocol

HCG Injection Instructions for Laboratory Use

Researchers searching for HCG injection instructions need validated protocols that ensure consistent delivery. The following steps apply to research administration in animal models. Adapt needle sizes and volumes to your specific species and protocol. Furthermore, all injections should be performed under aseptic conditions with IACUC approval. When you source hcg peptide for sale from our facility, these protocols provide a standardized starting point for your administration methods.

Step 1: Gather Supplies

• Reconstituted HCG peptide solution
• Appropriate syringe (insulin syringe for SC, standard syringe for IM)
• Alcohol wipes (70% isopropyl alcohol)
• Gauze pads
• Sharps container for needle disposal
• Clean work surface

Step 2: Prepare the Injection Site

Wash hands thoroughly with soap and warm water for at least 20 seconds. Next, clean the chosen injection site with an alcohol wipe and allow it to dry completely before proceeding.

Step 3: Prepare the Syringe

Draw the calculated HCG peptide dose into the syringe. For HCG injection subcutaneous administration, use a 0.5 to 5/8 inch 29-31 gauge needle. Alternatively, for intramuscular administration, use a 1 to 1.5 inch 22-25 gauge needle. Clear any air bubbles by tapping the syringe and expelling air.

Step 4: Subcutaneous Injection Technique

1. Pinch a 1 to 2 inch fold of skin between thumb and index finger
2. Insert the needle at a 45 to 90 degree angle into the subcutaneous fat layer
3. Release the pinched skin
4. Slowly depress the plunger to deliver the medication
5. Hold the needle in place for 10 seconds after complete delivery
6. Withdraw the needle at the same angle
7. Apply gentle pressure with gauze. Do not rub the injection site

Step 5: Intramuscular Injection Technique

1. Stretch the skin over the target muscle
2. Insert the needle at a 90 degree angle into the muscle tissue
3. Aspirate by pulling back slightly on the plunger to check for blood return
4. If no blood appears, slowly inject the medication
5. If blood appears, withdraw and select a new site with a fresh needle
6. Withdraw the needle and apply gentle pressure with gauze

Step 6: Post-Injection Protocol

Dispose of the needle immediately in a sharps container. Do not recap used needles. Monitor the injection site for signs of reaction. Additionally, rotate injection sites for subsequent administrations to prevent tissue irritation.

Where to Inject HCG Peptide: Research Sites

HCG Injection Subcutaneous Sites

• Lower abdomen: The semi-circle area below the belly button and above the pubic region. Stay at least one inch away from the navel. This is the most accessible site for research models.
• Outer thigh: The thick outside part of the thigh, away from the knee. This site offers substantial subcutaneous fat and easy access.
• Upper arm: The fatty part of the back of the upper arm. This site typically requires assistance for administration in research models.

HCG Injection Intramuscular Sites

• Upper outer buttocks: The ventrogluteal or dorsogluteal muscle near the hip. This is the standard site for IM injections in research protocols.
• Deltoid muscle: The rounded muscle around the shoulder. Avoid the knobby top part of the muscle.
• Vastus lateralis: The outer thigh muscle. This site is accessible and provides good muscle mass for injection.

What Size Needle for HCG Injection?

Researchers searching for what size needle for HCG injection will find the answer depends on the route. For HCG injection subcutaneous delivery, use a 0.5 to 5/8 inch needle with 29-31 gauge thickness. In contrast, for intramuscular delivery, use a 1 to 1.5 inch needle with 22-25 gauge thickness. The smaller gauge needles produce less pain but may require more pressure to inject the viscous HCG solution. Researchers who purchase hcg peptide for sale should select needle sizes appropriate to their species and route.

HCG Peptide Calculator Reference

Researchers frequently search for HCG peptide calculator tools to determine concentrations. Use the following reference for common reconstitution scenarios:

Vial Size	Diluent Volume	Concentration	Volume for 250 IU	Volume for 500 IU	Volume for 1000 IU
1000 IU	1 mL	1000 IU/mL	0.25 mL	0.5 mL	1.0 mL
2000 IU	1 mL	2000 IU/mL	0.125 mL	0.25 mL	0.5 mL
5000 IU	1 mL	5000 IU/mL	0.05 mL	0.1 mL	0.2 mL
5000 IU	2.5 mL	2000 IU/mL	0.125 mL	0.25 mL	0.5 mL
10000 IU	2 mL	5000 IU/mL	0.05 mL	0.1 mL	0.2 mL
10000 IU	5 mL	2000 IU/mL	0.125 mL	0.25 mL	0.5 mL

Adjust diluent volume to achieve your protocol’s required working concentration. All dosing should follow published protocols appropriate to your specific research model and endpoints. This calculator reference applies to all SKU sizes available as hcg peptide for sale.

HCG Peptide Dosage: Published Research Protocols

Published preclinical protocols for hcg peptide for sale span multiple species and research endpoints:

Research Model	Typical Dose	Route	Frequency	Key Finding
Rodent Leydig cell stimulation (testosterone measurement)	10-50 IU	Subcutaneous or intraperitoneal	Single dose; blood at 24, 48, 72h	Dose-dependent testosterone response; peak at 48-72h
Rat HPG axis recovery (post-suppression)	100-300 IU/kg/week	Subcutaneous	Divided 2-3× per week	Sustained testicular testosterone production
Leydig cell steroidogenesis assay	10 to 100 IU/mL	Cell culture	Continuous exposure	cAMP elevation and StAR phosphorylation
Bovine ovulation synchronization	1500-3000 IU	Intramuscular	Single dose at AI	Improved CL function and conception rates
Equine ovulation induction	1500-2500 IU	Intravenous or intramuscular	Single dose	Ovulation within 36-48 hours in ~85% of mares
Mouse CYP450 preservation (post-orchidectomy)	10-20 IU twice weekly	Subcutaneous	2× per week	Maintained CYP2C11, CYP3A2 at near-sham levels

We do not provide human dosing recommendations. HCG peptide is not approved for research use in humans outside approved clinical indications and is sold strictly for laboratory research purposes. Researchers who purchase hcg peptide for sale must design dosing protocols based on species-specific pilot data and institutional animal care committee review.

How to Reconstitute HCG Peptide

Step-by-Step Laboratory Protocol

1. Sanitize the vial stopper with 70% isopropyl alcohol
2. Inject bacteriostatic water slowly against the vial wall. Do not aim directly at the lyophilized cake — this can denature the glycoprotein
3. Allow the cake to dissolve without agitation for 2 to 3 minutes. Gently swirl if needed. Do not shake vigorously as this can disrupt disulfide bonds critical for receptor binding
4. Inspect for clarity. HCG peptide should produce a clear, colorless solution. Do not use if cloudy or containing particulate matter
5. Label with date, concentration, and reconstitution details before storage

Storage Requirements

• Lyophilized powder: 24 months at 2 to 8 degrees Celsius, protected from light
• Reconstituted solution: 30 to 60 days at 2 to 8 degrees Celsius under sterile conditions. Do not freeze reconstituted solution
• The bacteriostatic water contains 0.9% benzyl alcohol, which preserves sterility for multi-dose use
• Avoid repeated freeze-thaw cycles. Protect from light at all stages

Proper reconstitution is essential for researchers who source hcg peptide for sale, as the glycoprotein’s tertiary structure directly determines receptor binding affinity and biological activity.

HCG Peptide vs LH vs hMG: Research Comparison

Feature	HCG Peptide	LH (Luteinizing Hormone)	hMG (Menotropins)
Structure	Glycoprotein, alpha + beta subunits	Glycoprotein, alpha + beta subunits	FSH + LH mixture from urine
Receptor	LHCGR	LHCGR	FSH receptor + LHCGR
Half-life	24 to 36 hours	20 to 30 minutes	Variable
Primary effect	Sustained LH receptor activation	Acute LH receptor pulse	Follicular stimulation + LH activity
Testosterone stimulation	Strong, sustained	Pulsatile, short	Moderate
Spermatogenesis support	Indirect (via testosterone)	Indirect (via testosterone)	Direct (FSH component)
Clinical status	FDA approved (fertility)	No recombinant product	FDA approved (fertility)
Research focus	Steroidogenesis, ovulation trigger, HPG axis recovery	Pulsatile GnRH models	Ovarian stimulation

HCG peptide offers sustained receptor activation that LH cannot provide due to its short half-life. Consequently, for researchers studying chronic gonadal stimulation, hcg peptide for sale is the superior tool. However, for protocols requiring pulsatile signaling, native LH or gonadorelin (GnRH) pulse models are more appropriate.

HCG Peptide vs Testosterone: Research Comparison

Endogenous Stimulation vs Exogenous Replacement

Researchers studying male hypogonadism often compare HCG peptide to exogenous testosterone. The mechanisms are fundamentally different, and the choice determines which research questions you can answer.

Feature	HCG Peptide	Exogenous Testosterone
Mechanism	Stimulates endogenous production	Direct hormone replacement
Testicular volume	Preserved or increased	Decreased (suppression)
Spermatogenesis	Maintained	Suppressed
HPG axis	Partially preserved (testicular level only)	Fully suppressed
Estradiol elevation	Moderate (aromatization of endogenous testosterone)	Often significant (aromatization of exogenous testosterone)
Intratesticular testosterone	Physiological or supraphysiological	Near-zero (no Leydig cell stimulation)
Research application	Fertility preservation, testicular function, HPG axis recovery models	Androgen replacement models, tissue-specific androgen effects

HCG peptide preserves testicular function and spermatogenesis while stimulating endogenous testosterone. Exogenous testosterone suppresses the HPG axis and impairs fertility. Therefore, researchers studying combined approaches may use both in comparative protocols, but they serve fundamentally different research purposes. When your protocol demands testicular function preservation, hcg peptide for sale is the appropriate research tool.

Regulatory Context and Research Use

Current Status of HCG Peptide

HCG peptide is FDA approved for fertility treatment in women (ovulation induction, luteal phase support) and for cryptorchidism in prepubertal males. It is not FDA approved for weight loss, body composition modification, or male hypogonadism treatment outside approved clinical indications. Moreover, the FDA has issued warnings against HCG use for weight loss and has taken enforcement action against companies marketing HCG for this purpose. Meta-analyses of randomized controlled trials confirm that HCG provides no additional weight loss beyond placebo when diet is controlled — the weight loss attributed to HCG in fraudulent marketing is entirely from the accompanying severe caloric restriction, not the hormone itself (3).

For research purposes, hcg peptide for sale is available under research-use-only terms without a prescription for laboratory applications. You must agree to these terms at checkout. This compound is not for human consumption outside approved clinical protocols, veterinary use, or diagnostic application.

Why Purity Verification Matters for HCG Peptide

HCG peptide is a complex glycoprotein. Incorrect folding, incomplete glycosylation, or free subunit contamination will produce variable receptor binding and unreliable steroidogenesis data. Consequently, our batch-specific HPLC and bioactivity documentation confirms the correct heterodimeric structure and verifies potency against the WHO International Standard. Every COA is lot-specific and downloadable before purchase. No generic certificates. Researchers who seek hcg peptide for sale with verified potency consistently choose Pure Peptide Factory for this reason.

Product Specifications

Available Configurations

HCG peptide for sale is available in 1000 IU, 2000 IU, 5000 IU, and 10000 IU vials. Select your configuration from the product options above.

Quality Verification

• Potency: Verified by in vitro bioassay against WHO International Standard
• Purity: 98% minimum (HPLC verified)
• Identity: Confirmed by subunit-specific immunoassay
• Endotoxin: Less than 0.1 EU/mL
• Sterility: Verified per USP 71
• Form: Lyophilized powder
• Storage: 2 to 8 degrees Celsius long-term, protected from light
• CAS Number: 9002-61-3

Current Batch: #PPF-HCG-0426
Purity: 98.9%
Download: HPLC Certificate | Bioassay Report

Frequently Asked Questions

What is HCG peptide used for in research?

Researchers use hcg peptide for sale to study Leydig cell steroidogenesis, Sertoli cell function, ovulation induction, testicular descent in cryptorchidism, hypogonadism models, HPG axis recovery following androgen suppression, pregnancy biology and trophoblast function, and LH receptor pharmacology. It mimics luteinizing hormone and activates the LHCGR to trigger testosterone synthesis and gonadal function.

What are HCG peptide benefits in research models?

Published studies show HCG peptide stimulates testosterone production in Leydig cells, triggers ovulation in ovarian models, supports testicular descent in cryptorchidism studies, preserves spermatogenesis during gonadotropin suppression, maintains testicular volume in hypogonadism research, and preserves hepatic CYP450 enzyme activity in gonadectomized rodent models. These documented outcomes make hcg peptide for sale a versatile research tool.

Is HCG injection subcutaneous or intramuscular better for research?

Subcutaneous HCG injection produces identical steroidogenic responses to intramuscular injection in healthy models, with delayed peak and prolonged half-life. Intramuscular injection provides higher bioavailability in terms of AUC. Consequently, the choice depends on whether your protocol prioritizes sustained profiles (choose SC) or rapid peak concentrations (choose IM).

How do I inject HCG peptide in research models?

For subcutaneous injection, pinch a fold of skin, insert a 29-31 gauge needle at a 45-90 degree angle into the subcutaneous fat, inject slowly, hold for 10 seconds, and withdraw. For intramuscular injection, insert a 22-25 gauge needle at a 90 degree angle into the muscle, aspirate to check for blood, inject slowly, and withdraw. Before you begin, ensure you have sourced hcg peptide for sale from a verified supplier with batch documentation. Rotate sites for repeated administrations. All injections require IACUC approval. See the full injection guide above.

What size needle for HCG injection should researchers use?

For subcutaneous HCG injection, use a 0.5 to 5/8 inch 29-31 gauge needle. For intramuscular HCG injection, use a 1 to 1.5 inch 22-25 gauge needle. Smaller gauges reduce discomfort but may require more injection pressure.

Where to inject HCG peptide in research models?

For subcutaneous administration, the lower abdomen (semi-circle below the navel), outer thigh, and upper arm are standard sites. For intramuscular administration, the upper outer buttocks (ventrogluteal), deltoid, and vastus lateralis are standard. Rotate sites for repeated administrations.

What is the HCG peptide calculator for reconstitution?

The concentration depends on diluent volume. A 5000 IU vial in 1 mL yields 5000 IU/mL; in 2.5 mL yields 2000 IU/mL. A 10000 IU vial in 2 mL yields 5000 IU/mL; in 5 mL yields 2000 IU/mL. Calculate your protocol dose based on the final concentration. See the full calculator table above. All calculator values apply to every SKU of hcg peptide for sale in our inventory.

What is the difference between HCG peptide and LH?

HCG peptide and LH share the same alpha subunit and bind the same receptor. However, HCG peptide has a longer half-life (24-36 hours vs 20-30 minutes) and higher receptor affinity due to extensive glycosylation of the beta subunit C-terminal peptide. Therefore, HCG peptide provides sustained receptor activation, while LH provides pulsatile signaling.

How long does HCG injection stay in your system?

HCG has a half-life of approximately 24 to 36 hours. It remains detectable in serum for 10 to 14 days after administration of 5,000 to 10,000 IU. This prolonged clearance is important for researchers designing washout periods between treatments when using hcg peptide for sale in multi-phase protocols.

Is HCG peptide FDA approved?

Yes, for specific indications: ovulation induction, hypogonadotropic hypogonadism, and cryptorchidism. It is not FDA approved for weight loss, and the FDA has taken enforcement action against fraudulent HCG weight-loss products. Our product is research-grade hcg peptide for sale and is sold strictly for laboratory use.

How should HCG peptide be stored?

Lyophilized powder stores at 2 to 8 degrees Celsius for up to 24 months protected from light. Reconstituted solution stores at 2 to 8 degrees Celsius for 30 to 60 days under sterile conditions. Do not freeze reconstituted solution. Protect from light at all stages.

Can HCG peptide be combined with other research compounds?

Yes. Many researchers combine HCG peptide with gonadorelin (GnRH) or kisspeptin-10 for comprehensive HPG axis studies. Combination protocols studying metabolic recovery may pair HCG with sermorelin or CJC-1295 no DAC. For lipotropic support in metabolic protocols, Lipo-C with B12 may be studied alongside HCG peptide. All compounds are available from our catalog under identical storage conditions alongside hcg peptide for sale.

Where can I buy HCG peptide for sale for research?

Pure Peptide Factory stocks research-grade hcg peptide for sale with domestic cold-chain shipping and batch-specific HPLC and WHO International Standard bioassay documentation. Orders placed before 2 PM EST ship same-day and arrive within 1 to 3 business days. You must agree to research-use-only terms at checkout.

Buy HCG Peptide for Sale for Research

Secure Checkout

• Credit card, cryptocurrency, or wire transfer
• Same-day dispatch for orders placed before 2 PM EST
• Cold-chain packaging with phase-change cooling
• Discreet labeling and full tracking

Institutional Accounts

Net-30 terms and purchase order acceptance available for universities and pharmaceutical companies. Contact us for bulk pricing on 50 vials or more, including matched orders alongside gonadorelin, kisspeptin-10, sermorelin, and other reproductive endocrinology research compounds.

Add to cart and get batch-verified hcg peptide for sale delivered to your lab with the documentation your protocol requires.