After Hours Labs

High-Purity Research Peptides

Third-party tested for HPLC purity and identity, with a certificate of analysis matched to the exact batch you receive. Supplied for qualified laboratory research.

99%+ HPLC Purity
Batch-Matched COAs
For Research Use Only
Shop Peptides → View COAs
After Hours Labs research peptide vials labeled COA Verified, 3rd Party Tested and US Based Fast Shipping with a Halloween backdrop
99%+ HPLC Purity Third-party tested for purity and identity.
Ships Same Day – 48 Hrs Free shipping on orders $200+.
Featured Products

Popular research peptides, ready to ship.

Our most-ordered compounds, each with a batch-matched COA. Pick a size and add to cart right from the card.

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AH-RT3 10MG vial — After Hours Labs research product

AH-RT3

Price range: $100.00 through $250.00
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Select options This product has multiple variants. The options may be chosen on the product page
MOTS-C 10MG vial — After Hours Labs research product

MOTS-C

Price range: $65.00 through $150.00
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Select options This product has multiple variants. The options may be chosen on the product page
Multi-Buy Deal

Stock up on the same compound and save.

Applies automatically in your cart on every retail product. No code needed.

Same item only. Cannot be combined with coupon codes or other offers.
50%off 2nd
Buy 1, get the 2nd of the same item 50% off.
FREE3rd item
Buy 2, get the 3rd of the same item free.
Half-Kit Bundle

Mix any 5 vials. Take 35% off your whole order.

Pick any 5 or more research peptides, any compounds and any strengths. 35% comes off your entire order automatically. No code needed.

Cannot be combined with coupon codes or other offers.
Build Your Half-Kit →
5+vials, any mix
Mix compounds and strengths freely.
35%off entire order
Unlocks automatically at 5 vials.
Shop by Research Area

Find compounds by pathway.

Jump straight to the research area you work in.

8 productsMetabolicIncretin-class, amylin-pathway and lipid-metabolism research.Shop →7 productsGH / IGF AxisGHRH analogs, ghrelin-receptor secretagogues and IGF-1 analogs.Shop →7 productsTissue & InflammatoryBPC-157, TB-500, KPV, LL-37 and bioregulators.Shop →9 productsNeuro & CognitiveSemax, Selank, DSIP, VIP, kisspeptin and more.Shop →4 productsMitochondrialSS-31, MOTS-c, NAD+ and cellular-energy research.Shop →3 productsSkin & MatrixGHK-Cu copper peptide and matrix-biology blends.Shop →9 productsResearch BlendsMulti-peptide vials for side-by-side pathway studies.Shop →2 productsMelanocortinPT-141 and MT-II melanocortin receptor research.Shop →
Ordering & Shipping

Simple ordering. Fast, tracked delivery.

Orders ship within 48 hours from Tampa, Florida, with tracking on every package. If anything arrives damaged, missing or incorrect, our team makes it right.

$10 UPS Ground · $15 UPS 2-Day Free shipping on orders of $200 or more. Local pickup available in Tampa Bay, FL.
30-Day Return Review Unopened, unused products can be submitted for return review within 30 days of delivery.
Real People, Fast Answers Call 813-812-1211 or email info@afterhours-labs.com about orders, COAs or shipping.
After Hours Labs secure checkout and order confirmation screens showing encrypted payment and shipping details
After Hours Labs certificate of analysis showing HPLC purity and batch verification results for an AH-RT3 lot
Quality You Can Verify

Every batch tested. Every COA matched.

Every lot is analyzed by independent third-party testing. The lot number on your vial matches the COA you can look up before or after you order.

Purity + Identity HPLC purity and mass-spec identity on every lot, not just a headline number.
Lot-Matched Documentation Batch numbers on the vial and the COA line up, so results trace to your material.
Look It Up Anytime Browse every report by product and lot on the COA page.
Research Library

Know what you are buying.

Plain-language guides on COAs, purity testing, storage and research pathways.

Research LibraryHow to Read a Peptide Certificate of Analysis (COA)A practical walkthrough of a research peptide COA: batch numbers, identity by mass spectrometry, HPLC purity, chromatograms and the red flags that…4 min read →Research LibraryHow to Vet a Research Peptide Supplier: Red Flags and a 10-Point ChecklistThe warning signs that separate well-documented research peptide suppliers from risky ones, plus a 10-minute verification routine and a printable checklist.4 min read →Research LibraryHPLC Purity Explained: What “99% Pure” Really Means for Research PeptidesHow HPLC measures peptide purity, what the percentage includes and leaves out, and why purity, identity and content are three different questions.3 min read →
Browse the Research Library
Affiliate Program

Refer researchers. Earn 20% on every order.

Join the After Hours Labs affiliate program. Your audience gets 10% off with your personal code, and you earn 20% on every order they place, first orders and reorders, paid monthly.

Open to partners across the U.S. Research-use-only promotion rules apply.
Become a Partner →
20%commission
On every order, including reorders.
10%buyer discount
With your code. Works with Buy 2 deals.
FAQ

Questions, answered.

How do I know what is in the vial?

Every lot is tested by an independent third-party lab for HPLC purity and identity. The lot number on your vial matches a certificate of analysis you can look up on our COA page.

How fast do orders ship?

Orders ship within 48 hours, often the same day, from Tampa, Florida. Shipping is $10 UPS Ground or $15 UPS 2-Day, and free on orders of $200 or more. Every package has tracking.

How does the multi-buy deal work?

Buy 1 and get the 2nd of the same item 50% off; buy 2 and get the 3rd free. It applies to the same exact item, repeats in sets, and cannot be combined with coupon codes or other offers.

What if my order arrives damaged or incorrect?

Contact us with your order number and photos and we will review it quickly. Unopened, unused products can also be submitted for return review within 30 days of delivery.

Do you offer wholesale or private label?

Yes. Approved wholesale partners get tiered kit pricing, batch-matched COAs and an optional private-label program. Apply on our Wholesale page.

Are these products for human use?

No. All After Hours Labs products are sold strictly for qualified in-vitro laboratory research and are not for human or veterinary use.

Need Help?

Ready to continue your research order?

Browse available research peptides, review product details, or contact support for help with COAs, shipping, account access, and order questions.

813-812-1211 info@afterhours-labs.com Batch-matched COAs
Shop Peptides → Need Help? Contact Support
For Research Use Only. Not for Human Consumption.