HCG
Price range: $52.80 through $91.20
Become a Member and save 20% on Every Order.Â
99.8% — exceeds 99.00% minimum spec
- Batch
- HCG-202604-001
- Test date
- April 30, 2026
- Method
- HPLC + MS
- Lab
-
Bioviridian
College Station, TX
Description
HCG (Human Chorionic Gonadotropin)
THIS IS NOT FOR HUMAN CONSUMPTION. SOLD FOR RESEARCH ONLY!
HCG peptide​ Details
Human Chorionic Gonadotropin (HCG) is a glycoprotein hormone structurally similar to luteinizing hormone (LH), naturally produced by the placenta during pregnancy but studied in reproductive endocrinology for its ability to bind and activate the same LH receptor found in gonadal tissue. In males, this LH-receptor activity stimulates Leydig cells to produce testosterone and supports intratesticular testosterone concentrations important for spermatogenesis, making HCG a frequently studied compound in male reproductive-axis and fertility research, particularly in contexts involving hypothalamic-pituitary-gonadal axis suppression. In females, HCG's LH-receptor activity is central to its established role in ovulation-induction research, where it substitutes for the natural LH surge to trigger final oocyte maturation. HCG's long history of clinical use in reproductive medicine has generated an extensive pharmacological dataset that continues to inform current research into gonadal-axis signaling and fertility-related endocrinology.
HCG peptide​ Scientific Research
- HPG Axis and LH Receptor Signaling
hCG is widely used to study how LH/hCG receptor activation influences gonadal function:
- Receptor Activation: In cell culture and animal models, hCG exposure activates LH/hCG receptors, allowing researchers to map downstream second messenger systems, such as cAMP-dependent pathways and kinase cascades.
- Steroidogenesis: hCG stimulation is used to assess the capacity of gonadal cells to synthesize steroids, including testosterone and related intermediates, and to characterize enzyme activity in steroidogenic pathways.
- Feedback and Regulation: By providing a controlled LH-like stimulus, hCG helps clarify how gonadal hormones feed back on the hypothalamus and pituitary in experimental systems.
These studies support a detailed mechanistic understanding of reproductive hormone signaling and regulation.
- Testicular Function and Spermatogenic Support Models
In testes-focused research, hCG is frequently used as a tool to examine hormone-dependent testicular processes:
- Leydig Cell Studies: hCG is a standard agonist to study Leydig cell steroidogenesis, receptor density, and signaling adaptation over time.
- Sertoli and Germ Cell Context: By modulating intratesticular hormone levels in animal models, hCG exposure allows researchers to assess how endocrine signals support spermatogenic environment and germ-cell maturation.
- Developmental and Functional Assessments: Experimental paradigms sometimes use hCG to explore testicular descent, structural maturation, and hormone responsiveness in developmental models.
These investigations support broader insights into testicular physiology and spermatogenic support mechanisms.
- Ovarian and Follicular Research
Because hCG can act via the same receptor as LH, it is also utilized to model aspects of ovarian function:
- Follicular Response: In controlled models, hCG exposure is used to study late follicular signaling, luteinization processes, and steroid production.
- Corpus Luteum Models: hCG serves as an LH surrogate to investigate corpus luteum formation, maintenance, and hormone output.
Such work helps clarify the timing, magnitude, and biochemical consequences of LH-like surges in ovarian physiology.
- Endocrine and Signal-Transduction Studies
hCG is a valuable reagent for dissecting signal-transduction pathways:
- GPCR Mechanisms: Since the LH/hCG receptor is a G-protein–coupled receptor, hCG is used to explore Gs-mediated cAMP production and downstream kinase activation.
- Desensitization and Internalization: Repeated or sustained hCG exposure is used to study receptor desensitization, internalization, and recycling, shedding light on hormone-responsiveness dynamics.
These experiments contribute to general GPCR signaling frameworks and receptor pharmacology beyond reproductive biology alone.
- Biomarker and Assay Development
Due to its well-characterized structure and role, hCG also appears in methodological research:
- Assay Calibration: hCG is frequently used as a standard or calibrator in immunoassays that quantify hormone levels in biological samples.
- Binding Studies: Radiolabeled or tagged hCG variants are applied to measure receptor binding kinetics, affinity, and receptor density in various tissues or cell lines.
This assay-oriented research underpins many of the measurement techniques used in endocrine and clinical research laboratories.
Article Titles & Journals
- Clinical outcomes of the short agonist stop protocol versus the long GnRH agonist protocol
- Pituitary Axis Impacts and Effectiveness of Clomiphene and Human Chorionic Gonadotropin in
- Follicular development during the follicular phase of the menstrual cycle: the enigma of l
- Analysis of factors that increase serum progesterone levels on the day of hCG administrati
- Analyte-containing dilution extends the functional range of clinical immunoassays for volu
Fast, reliable shipping
We offer fast, reliable shipping through UPS and USPS.
Shipping Options
UPS shipping options include:
- Next Day Air
- 2nd Day Air
- 3 Day Select
- UPS Ground
Order Processing
- We ship Monday through Saturday.
- Orders placed before 6:00 PM EST / 3:00 PM PST are typically shipped the same day.
- Orders placed after the daily cutoff or on holidays will be processed on the next available shipping day.
Puerto Rico, Hawaii & Alaska
- Orders shipping to these destinations are sent via USPS unless alternative arrangements have been made in advance.
- Need a different shipping method? Contact us before placing your order so we can discuss available options.
Order Tracking
- Once your order has shipped, you'll receive a shipping confirmation email with tracking information so you can monitor your delivery.
- Orders totaling $200 or more qualify for FREE UPS 2nd Day Air shipping within the continental United States.
- Free 2nd Day Air shipping does not apply to orders shipping to Puerto Rico, Hawaii, or Alaska.
Handled correctly, stability holds
All peptides are supplied as sterile, lyophilized powder and are stable when handled correctly.
Store vials in a cool, dry place away from heat and direct sunlight.
For optimal longevity, keep lyophilized peptides refrigerated to help maintain integrity.
Use an appropriate research diluent (for example, BAC water). Store the reconstituted solution in the refrigerator and use within 20–30 days for best stability.
Minimize exposure to moisture and repeated freeze–thaw cycles. Follow your institution's safety procedures when handling research materials.
Frequently Asked Questions
PRODUCT & PURITY
This product is offered for laboratory and research use only. It is not intended for human consumption, medical use, therapeutic use, or veterinary use.
Yes, all of our products are sterile and sealed with a sterility plug and safety cap.
Our products undergo quality control internally at our lab and then 3rd party tested at Bioviridian (at their Texas facility) prior to shipment. All of our COA's are then posted on our site immediately upon receipt.
99% or higher. Period. The expected purity is listed on the individual product page or Certificate of Analysis, when available.
No. We are a manufacturing company and because these products are sold for research purposes only, we do not provide dosing, administration, or medical-use guidance.
Unless specifically stated otherwise, these products are not approved by the U.S. Food and Drug Administration for therapeutic or diagnostic use.
STORAGE & STABILITY
As a lyophilized powder, peptides are stable. Delays in shipments up to 7 days will have zero to minimal impact on efficacy of peptides. Most precautionary efforts must be made to maintain temperature consistency once reconstituted.
Store the product according to the storage recommendations provided on the label or accompanying documentation in your shipment. Proper storage helps maintain product integrity during its shelf life. Most peptides have an expiration date of 2 years if kept unreconstituted (lyophilized powder).
SHIPPING
Shipping times vary based on your location and the shipping method selected at checkout. We offer shipping options between 1 and 5 days.
No.
Once your order is processed, you will receive a shipping confirmation email with tracking information.
ORDERS
Each order includes the peptide vial as described on the product page above.
We accept all forms of credit cards and Zelle.
If your order has not yet been processed for shipment, we may be able to make changes. Please contact customer support as soon as possible after placing your order.
If your order arrives damaged or incorrect, contact our customer support team promptly at support@peaklabpeptides.com with your order number and photos of the package and product so we can assist you.
For the safety of our researchers and integrity of our products we can not accept returns whatsoever.
SUPPORT
If you have questions about your order or a product, please reach out through our customer support page or contact us at support@peaklabpeptides.com or call/text 605-524-2800.
Purity you can verify
TESTED
VERIFICATION
Peak Lab Peptides maintains quality-control processes and routinely performs third-party testing to support purity and identity verification. COAs are available upon request for applicable batches. Documentation may vary depending on production timelines.
AVAILABILITY
We aim to make batch-level documentation available whenever possible. Our goal is to expand COA access across the full catalog as production capacity grows.
All products are for laboratory research use only and are not intended for human consumption.
Related Products
B12 (1ml / 1mg)
Vitamin B12 Peptides (Cyanocobalamin)
Product Details:
Compound: Cyanocobalamin (Vitamin B12) Concentration: 1mg / 1ml per vial Form: Sterile injectable solution Container: 3ml / 10ml multi-dose vial Storage: Store in a cool, dry place. Refrigerate after opening. Research Grade: For laboratory research purposes only. Not for human consumption or therapeutic use. Research Applications May Include: Studies on energy metabolism and fatigue Neurological repair and neuroprotection research Red blood cell production models
CJC-1295 No DAC + Ipamorelin – 5mg + 5mg (10mg total)
CJC-1295 No DAC + Ipamorelin
Product Details:
Peptides: CJC-1295 No DAC + Ipamorelin Purity: >98% Form: Lyophilized powder Quantity: 10mg total per vial (typically 5mg of each peptide unless otherwise specified) Storage: Store lyophilized powder at -20°C. Once reconstituted, refrigerate (2–8°C) and use within 30 days. Research Grade: For laboratory research purposes only. Not for human use, therapeutic, or diagnostic applications. Research Applications May Include: Synergistic stimulation of natural GH release Studies on recovery, lean mass, and anti-aging Exploration of GH/GHRH/GHRP axis functionality
KLOW Blend 80mg – GHK-Cu, TB-500, BPC-157, KPV
KLOW Blend
KLOW – 80mg Peptide Blend (Lyophilized Powder) – For Research Use Only GHK-Cu • TB-500 • BPC-157 • KPV
KLOW is an advanced 4-in-1 research peptide blend combining 80mg of compounds studied for their potential in tissue repair signaling, immune modulation, and cellular recovery mechanisms in controlled laboratory environments. Each component contributes a distinct and complementary mechanism of action, making KLOW a subject of interest in multi-pathway research models.
Active Ingredients (Per Vial):
GHK-Cu – 50mg A copper-binding tripeptide studied for its role in collagen synthesis, cellular regeneration signaling, and extracellular matrix remodeling in laboratory research models.
TB-500 – 10mg A synthetic fragment of Thymosin Beta-4 studied for its interaction with G-actin sequestration, angiogenesis pathway activity, and cell migration mechanisms in preclinical research.
BPC-157 – 10mg A synthetic pentadecapeptide derived from a gastric protein, studied for its role in tissue repair signaling, NO system modulation, and VEGF pathway activity in controlled research environments.
KPV – 10mg A naturally occurring tripeptide fragment studied for its role in inflammatory signaling pathway modulation and immune regulation mechanisms across multiple tissue types.
Product Details:
- Total Peptide Content: 80mg per vial
- Form: Lyophilized powder
- Purity: >99%
- Quantity: 80mg vial
- Storage: Store at -4°F (-20°C). After reconstitution, refrigerate at 36–46°F (2–8°C) and use within 30 days.
- Grade: For research purposes only. Not for human consumption, therapeutic, or diagnostic use.
Potential Research Applications:
- Multi-peptide synergy and complementary pathway mechanism studies
- Cellular regeneration signaling and extracellular matrix research
- Inflammatory pathway modulation and immune regulation models
- Angiogenesis, cell migration, and tissue repair signaling investigations
For laboratory research only. This product is not intended to diagnose, treat, cure, or prevent any disease.
NAD+
NAD+
NAD+ (Nicotinamide Adenine Dinucleotide) – For Research Use Only
NAD+ is a naturally occurring coenzyme found in all living cells, studied for its fundamental role in cellular energy metabolism, mitochondrial function, and biochemical signaling pathways. Research models have explored its activity in sirtuin activation, DNA repair mechanisms, and oxidative stress response in controlled laboratory environments. Its role as a key coenzyme in redox reactions makes it a subject of significant interest in cellular biology and metabolic pathway research.
Product Details:
- Compound: NAD+ (Nicotinamide Adenine Dinucleotide)
- Purity: >99%
- Form: Lyophilized powder
- Quantity: 100mg, 500mg, or 1000mg per vial
- Storage: Store at -4°F (-20°C). After reconstitution, refrigerate at 36–46°F (2–8°C) and use within 30 days.
- Grade: For research purposes only. Not for human consumption, therapeutic, or diagnostic use.
Potential Research Applications:
- Mitochondrial function and cellular energy metabolism studies
- Sirtuin pathway activation and NAD+ dependent enzyme research
- DNA repair mechanism and oxidative stress response models
- Redox signaling and cellular biochemistry investigations
For laboratory research only. This product is not intended to diagnose, treat, cure, or prevent any disease.
