Guides to buying research peptides
17 guides on how certificates, batch numbers, storage, pricing and wholesale ordering work here, written down so nobody has to ask. Each carries the date it was written and the date it last changed.
Certificates and batches
How to read a certificate of analysis for a research peptide
Read a peptide COA in this order: batch number, identity by mass, purity by RP-HPLC, net content (not net peptide content).
23 September 2026, updated 27 October 2026
Batch (lot) numbers: how they are built and how to verify one
Anyone, your customers too, can verify a batch (lot) number on the certificate page, in the register its certificate was issued from.
23 September 2026, updated 27 October 2026
Purity 98 or 99 percent: what the number on a peptide certificate does and does not tell you
98 or 99 percent is the main peak’s share of the HPLC peak area at 220 nm, not of the vial’s weight: a 10mg vial at 99 percent holds 10mg of material.
23 September 2026, updated 7 October 2026
HPLC and mass spectrometry on a peptide certificate: what each result is
HPLC is purity at 220 nm, where the peptide bond absorbs; mass spectrometry is identity, matched to the calculated average mass.
6 October 2026, updated 7 October 2026
Retest dates and shelf life on research peptides, explained
A retest date is when a batch is analysed again before further use; past an expiry date it is not used. Shelf life here: 24 months.
23 September 2026, updated 7 October 2026
The goods
Storing and handling lyophilised research peptides
Store sealed lyophilised peptides at minus 20 °C, dark and dry: 24 months of shelf life. A short spell at ambient in transit is tolerated.
23 September 2026, updated 27 October 2026
Lyophilised powder or solution: what the form of a vial means for buying and storing it
Nearly every line here is freeze-dried powder kept at minus 20 °C; the solution lines are kept at 2 to 8 °C and never frozen, and water and B12 on a room-temperature shelf.
23 September 2026, updated 16 October 2026
Bacteriostatic water: what it is, how it is kept and what its certificate carries
Bacteriostatic water is water with 0.9% benzyl alcohol; sterile water carries none. BAC3 and BAC10 are kept at room temperature.
24 September 2026, updated 2 November 2026
Price per milligram: how to compare vial strengths properly
Price per mg is the box price over the milligrams in it, the vials times the strength: ten 10mg vials at $40 is $0.40 per mg.
23 September 2026, updated 27 October 2026
Peptide kits explained: what 10x10mg and a 10-vial kit mean
A kit is one strength in a sealed box: 10x10mg is ten 10mg vials, 100mg in all; a code such as RT10 is retatrutide in 10mg vials.
3 October 2026, updated 27 October 2026
Buying
How wholesale peptide ordering works: minimums, payment, delivery
Open a free trade account, add whole boxes ($100 on a first order), pay by card, Wise, e-Transfer (Canada), Bitcoin or USDT; shelf lines ship in 1 to 2 business days.
23 September 2026, updated 25 October 2026
Opening a wholesale peptide account: who qualifies and what it takes
Resellers, distributors and laboratories open a free trade account in minutes with a name, email, phone and purpose.
23 September 2026, updated 25 October 2026
Minimum order, first order and box multiples: the rules and why they exist
From $100 of goods on a first order, stepping up with the account to $1,000 by the fourth; whole boxes; 50 on special-order lines.
23 September 2026, updated 27 October 2026
Paying a proforma in Bitcoin or USDT: exact amounts, exchange fees and confirmation
Paying a proforma in Bitcoin or USDT (cards, Wise and e-Transfer are taken too). Send the proforma amount as the amount to be received, or exchange fees leave it short.
23 September 2026, updated 6 November 2026
How a research peptide order is packed, tracked and shipped
Shelf lines leave 1 to 2 business days after payment clears, in a plain carton, tracked on your order page; no ice for lyophilised lines.
23 September 2026, updated 16 October 2026
How to choose a wholesale peptide supplier: what to check before buying in bulk
A ten-question checklist for choosing a wholesale peptide supplier, from a certificate you can verify at its source to public prices; then follow one batch number end to end on the first order.
23 September 2026, updated 27 October 2026
White label and private label: what the two words mean, and which one you need
White label is one finished product sold under many resellers’ names; private label is a run made to your order, under your label.
25 September 2026, updated 16 October 2026