What are research peptides?
Peptides are short chains of amino acids linked by peptide bonds — typically between 2 and 50 residues. Synthetic peptides are used throughout biochemical and pharmacological research to study receptor binding, signalling pathways, and cellular processes in controlled laboratory settings.
TNT Labs peptides are supplied as a lyophilized (freeze-dried) powder for stability during storage and transport.
Storage & handling
The timeframes below are general guidelines based on common laboratory practice, not fixed expiration dates. Actual stability depends on the compound, the diluent, how often the vial is opened, and storage conditions, so treat them as approximate.
| State | Temperature | Approximate stability |
|---|---|---|
| Lyophilized, unopened | −4 °F (freezer) | Long-term (months to years) |
| Lyophilized, unopened | 36–46 °F (fridge) | Several weeks |
| Reconstituted | 36–46 °F (fridge) | Days to a few weeks, compound-dependent |
- Allow vials to reach room temperature before opening to limit moisture condensation.
- Protect from light; peptides containing Trp, Met or Cys are especially prone to oxidation.
- Avoid repeated freeze–thaw cycles — aliquot reconstituted material if it will be used over time.
- Add diluent slowly down the side of the vial and swirl gently; do not shake.
Dose calculator
Enter the peptide in the vial, the diluent added and a target dose to get the concentration and where to draw on a U-100 insulin syringe.
Assumes a U-100 insulin syringe, where 100 units = 1 mL. The results are arithmetic only, so check them against the vial label. For laboratory research calculations only.
Testing & certificates of analysis
Every lot we stock is tested by an independent, third-party laboratory before it is sold. Each Certificate of Analysis (COA) is tied to the lot number printed on the vial.
HPLC
High-performance liquid chromatography quantifies purity as the share of the target peptide peak.
Mass spec
LC-MS / MALDI confirms identity by matching observed molecular mass to theoretical.
Endotoxin & sterility
Available on request for select lots; contact us with the lot number.
COA lookup by lot number is coming soon. In the meantime, email coa@tntlabs.example with your lot number.
Compound library
Every compound in the catalog, with the sizes we carry and current availability.
| Compound | Category | Sizes | Availability |
|---|
Frequently asked questions
Who can purchase from TNT Labs?
Products are sold to adults 21+ for in-vitro laboratory research only. They are not for human or veterinary use.
How is my order shipped?
Orders placed before 2pm (ET) on business days ship the same day in insulated packaging with tracking. Orders over $200 ship free.
How do I pay?
After you submit an order request, we confirm availability and email payment instructions. Your stock is reserved for 48 hours.
What if an item is out of stock?
Use the "Notify me" option on the product page and we'll email you when it's back in stock.
Do you offer bulk orders?
Yes — contact orders@tntlabs.example with the compound, quantity and purity requirements.