Help centre

Questions, answered.

Short answers on orders, shipping, testing and policies.

Products

Products & quality

What are your products for?

Laboratory research only. They are not drugs, foods or cosmetics, and are not for human or animal use of any kind.

Does every product come with a COA?

Yes. Every in-stock lot is tested by an independent lab, and that lot’s certificate goes in the box. Published lots, with the lab’s lookup code, are on our certificates page.

How is purity measured?

HPLC, with mass spectrometry confirming identity. Each certificate lists the methods and results. Need the raw data? Ask us.

What is Molecula Diluent?

Bacteriostatic water with 0.9% benzyl alcohol, in a 10 ml glass or 30 ml Hospira plastic vial. Our peptides ship as freeze-dried powder, so a diluent brings them back into solution.

Why does a size say “Out of stock”?

We carry one lot at a time. When a size sells out, tap Notify me on its page and we email you the moment the next lot is in.

Ordering

Ordering & payment

Do I need an account?

Yes, but there is no extra step. Enter your email at checkout and the account is created for you. Your orders, lot numbers and tracking then stay in My Account.

How can I pay?

Card, Apple Pay or Google Pay in the secure CentryOS checkout, or crypto (BTC, ETH, USDT and more) through NOWPayments, which saves 5%. Both options are shown at checkout.

Is my payment safe?

Yes. We never see or store your card details. Card and wallet payments are entered in CentryOS’s encrypted payment window, and crypto payments are handled by NOWPayments.

Do you discount larger orders?

Automatically: 3% off two vials, 7% off three or more, and a free diluent at $100+. No code needed. Buying in volume? Email us.

Do you sell kits?

Yes. Sealed 10-vial boxes, one compound, one lot, at least 20% under singles. Shop the kits.

Is there a deal running?

All October: buy 2 vials, get a free treat vial, up to 5 per order. Treats land in your cart by themselves and you can swap them there. No code. Offer terms.

Can I cancel my order?

Within 24 hours, for any reason. Cancel in My Orders or email us.

Shipping

Shipping & delivery

How fast does it ship?

In stock ships within 24 hours (kits 1–2). Then USPS: Standard 2–3 days, Priority 1–2, Express 1–2 guaranteed. Free 2-day shipping (USPS Priority) over $75.

How is it packaged?

A plain padded mailer. Nothing on the outside but the addresses.

Do you ship internationally?

Not yet. We ship within the United States only.

My tracking hasn’t moved. Should I worry?

Usually not — it can take a day after the label prints. No movement after three business days? Send us your order number.

Storage

Storage & handling

How should I store it?

Sealed, at −20°C, away from light.

It arrived at room temperature. Is it ruined?

No. Freeze-dried powder is stable in transit. Move it to −20°C when it arrives.

Are the vials sterile?

No. They are research-grade materials, not sterile pharmaceutical products. Where a lot was screened for endotoxin, the result is on its certificate.

Can you advise on my experiment?

We can answer questions on specs, purity, solubility and storage. We can’t advise on experimental design or any use.

Policies

Policies & eligibility

Who can buy?

Researchers and institutions aged 21 or over, for lawful research use. See our Research Use Policy.

Why do you ask my research field at checkout?

It records the research context of your order. It is never shared for marketing.

Something arrived damaged or wrong?

Email us within 7 days of delivery with your order number and a photo. We replace or refund it.

Can I return an order?

Not for a change of mind once the cancel window has passed. Anything damaged, wrong or missing is replaced. Refund policy.

What do you do with my information?

Only what we need to ship and support your order. We never sell it. Privacy Policy.

Still stuck?

We reply within one business day.

Research use only

Products are sold for in-vitro laboratory research only. Not for human or animal consumption, and not for diagnostic or therapeutic use.

Ships within 24 hoursIn-stock orders, from the US. Kits in 1–2 business days.
Free 2-day shipping over $75USPS Priority. $9 Standard below that.
Replies within one business dayReal people, by email or phone.

A founder-run US supplier of research peptides. Every in-stock lot is tested by an independent lab, and every result is published, including the lot we rejected.

We acceptCardApple PayGoogle PayCrypto · save 5%Cards and wallets are processed in the secure CentryOS checkout. Crypto is processed by NOWPayments.

© 2026 Molecula Labs LLC. All rights reserved.