HGH Fragment 176-191
$27.80 – $64.80Price range: $27.80 through $64.80
Become a Member and save 20% on Every Order.
Description
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
GHK-Cu
Glutathione
Glutathione
Glutathione – 1500mg (Lyophilized Powder) – For Research Use Only
Glutathione is a naturally occurring tripeptide composed of glutamine, cysteine, and glycine. It functions as a major intracellular antioxidant and plays a critical role in cellular detoxification, oxidative stress reduction, and immune support.
Widely studied for its potential in anti-aging, liver health, and cellular repair models, Glutathione supports the body’s natural defense mechanisms against free radicals and environmental toxins.
Product Details:
-
Compound: Glutathione (γ-L-Glutamyl-L-cysteinylglycine)
-
Purity: >98%
-
Form: Lyophilized powder
-
Quantity: 600mg or 1500mg 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 use only. Not for human consumption or therapeutic applications.
Potential Research Applications:
-
Oxidative stress and antioxidant activity studies
-
Cellular detoxification and immune response research
-
Anti-aging and skin health models
-
Liver function and protective mechanism investigations
KissPeptin-10
Kisspeptin-10
Kisspeptin-10 – 10mg (Lyophilized Peptide) – For Research Use Only
Kisspeptin-10 is a short-chain peptide fragment of the kisspeptin family, known for its regulatory role in the hypothalamic-pituitary-gonadal (HPG) axis. It is widely studied for its potential to influence GnRH (Gonadotropin-Releasing Hormone) secretion, making it a key subject in research on fertility, reproductive hormone modulation, and endocrine function.
Kisspeptin-10 has also been explored in studies related to puberty onset, reproductive health, and hormone signaling pathways.
Product Details:
-
Peptide: Kisspeptin-10 (Metastin 10 fragment)
-
Purity: >98%
-
Form: Lyophilized powder
-
Quantity: 10mg 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:
-
Fertility and reproductive hormone studies
-
HPG axis and GnRH secretion models
-
Endocrine signaling and modulation research
-
Studies on puberty and reproductive health
For laboratory research only. This product is not intended to diagnose, treat, cure, or prevent any disease.
LL-37 (5mg)
LL-37 Peptide – 5mg (Lyophilized Peptide in 3ml Vial) – For Research Use Only
LL-37 is a human antimicrobial peptide derived from the cathelicidin family, extensively studied for its roles in innate immunity, antimicrobial defense, wound healing, and inflammation regulation. LL-37 exhibits broad-spectrum activity against bacteria, viruses, and fungi, and plays a key role in modulating the body’s immune and inflammatory responses. In research, LL-37 is of particular interest in models exploring skin healing, immune signaling, tissue regeneration, and antimicrobial resistance.Product Details:
Peptide: LL-37 Purity: >98% Form: Lyophilized powder Quantity: 5mg per vial Vial Size: 3ml sterile glass 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:
Antimicrobial and infection control models Wound healing and skin regeneration studies Immune system modulation and inflammation research Studies on epithelial repair and barrier function For laboratory research use only. This product is not intended to diagnose, treat, cure, or prevent any disease.Melatonin
Melatonin
Melatonin – 100mg (Lyophilized Powder) – For Research Use Only
Melatonin is a naturally occurring hormone produced by the pineal gland, primarily known for its role in regulating the sleep-wake cycle (circadian rhythm). In research, Melatonin is studied for its potential effects on sleep regulation, antioxidant activity, immune modulation, and neuroprotection.
Studies have also explored its impact on oxidative stress and inflammation in various biological models.
Product Details:
-
Compound: Melatonin (N-Acetyl-5-methoxytryptamine)
-
Purity: >98%
-
Form: Lyophilized powder
-
Quantity: 100mg 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 use only. Not for human consumption or therapeutic use.
Potential Research Applications:
-
Sleep and circadian rhythm studies
-
Antioxidant and oxidative stress research
-
Immune modulation investigations
-
Neuroprotection and anti-aging models
PEG-MGF 2mg
PNC-27
Survodutide
TB-500
TB-500 (TB500)
TB-500 (Thymosin Beta-4 Fragment) – 5mg or 10mg (Lyophilized Peptide) – For Research Use Only
TB-500 is a synthetic Thymosin Beta-4 fragment studied in preclinical models for its roles in actin-binding dynamics, cell migration, angiogenesis, and tissue repair signaling. Supplied as lyophilized powder at 99%+ HPLC verified purity. Batch-specific COA included. For in vitro research use only.
Yearly Membership ( 2 Months Free )
Get 2 Months Free — Save More, Earn More, Research Smarter
Upgrade to the Yearly Membership and unlock the ultimate value:
You get 12 months of VIP benefits for the price of 10.
That’s 2 full months free, plus all premium perks included.
For researchers who order regularly, this is the most cost-effective membership option.
Why Choose the Yearly Plan?
✔ 2 Months Free (Best Value)
Pay once and enjoy a full year of:
-
Automatic 20% off all peptides
-
Free 2-day shipping
-
VIP support access
You save more over time compared to paying monthly.
✔ Guaranteed Lowest Pricing All Year
Enjoy 20% off every order, every time.
No caps, no order limits, no expiration.
✔ Free Priority Shipping (All Year Long)
Your orders always ship with upgraded 2-day delivery at no additional cost.
✔ VIP Research Support
Skip the queue.
Members receive faster responses, priority handling, and expert order assistance.
✔ Exclusive Early Access Drops
Yearly members are the first to access:
-
New peptide releases
-
GLP-1 variants
-
Limited-batch research materials
-
Bulk pricing events
Many of these never become available to the general public.
✔ Annual Member Perks
Yearly members enjoy premium bonuses such as:
-
Bonus vials
-
Seasonal discount codes
-
Early product launches
-
Limited-time research bundles
Membership Pays for Itself Fast
Example:
A researcher who spends $150 per order
→ Saves $30 instantly
With multiple orders across the year, savings multiply fast—
making the yearly plan the most profitable option.
Peak Purity Promise
All research materials are:
-
≥ 99% purity
-
Manufactured in CGMP-aligned facilities
-
Independently tested
-
For research use only (not for human use)
Membership Benefits Overview
| Benefit | Monthly | Yearly (2 Months Free) |
|---|---|---|
| 20% Off Every Order | ✔ | ✔ |
| Free Priority Shipping | ✔ | ✔ |
| VIP Support | ✔ | ✔ |
| Early Access Drops | ✔ | ✔ |
| Bulk Discounts | ✔ | ✔ |
| 2 Months Free | ✘ | ✔ |
| Best Overall Savings | ✘ | ✔ |
Who Is the Yearly Membership For?
Perfect for researchers who:
-
Order frequently throughout the year
-
Want maximum long-term savings
-
Prefer guaranteed shipping upgrades
-
Value early access and priority handling
-
Want the lowest possible pricing on every order
Join the Yearly Peak Lab Membership
Get 2 Months Free + Instant 20% Off + Free 2-Day Shipping
Your research materials, delivered faster and cheaper—all year long.
Cancel Anytime
Stay a member as long as the savings serve you.
Cancel easily with one click.
For Research Use Only
All materials are strictly for laboratory research purposes.
Not for human consumption.
