A working reference for the bench.
Practical answers to the questions we hear most from research accounts. Written for people actually running the assays, not for regulatory copy. If your question is not here, reach the lab team through the contact section on the home page.
How Strive verifies what ships
What testing does each lot go through?+
Every incoming lot is sampled and analyzed by an independent laboratory using reverse-phase HPLC for purity and mass spectrometry for identity. In-house checks are used as a secondary layer, not the primary release gate.
What purity specification does Strive use?+
Compounds are produced against a ≥99% purity target measured by HPLC area-percent. Any lot that falls below spec is rejected before it enters catalog inventory.
How do I get a Certificate of Analysis?+
Use the “Request a COA” action on any product card or product page. Include the compound and, if you already have material on hand, the lot number printed on the vial label. We reply within one business day.
How long is a COA valid?+
A COA is tied to the specific lot it was generated for. If you receive a new lot, request the matching COA — earlier documents do not carry over.
Reconstitution and lab practice
What solvent should I use for reconstitution?+
Solvent selection depends on the compound. Bacteriostatic water is common for many lyophilized peptides; some hydrophobic compounds require an initial dissolution step in DMSO or acetic acid. Consult the product-specific documentation on the COA before opening the vial.
How should I aliquot reconstituted material?+
Aliquot into single-use volumes based on your typical experimental draw. This keeps repeated freeze-thaw cycles limited to a single aliquot rather than the entire working stock.
What PPE is expected?+
Nitrile gloves, safety eyewear, and a lab coat at minimum. Weighing and reconstitution should be performed in a ventilated area, away from food, drink, or personal items.
Keeping specification through the workflow
How should lyophilized material be stored?+
Store sealed vials at −20°C in a light-protected container until first use. Allow vials to equilibrate to room temperature before opening to avoid moisture ingress from condensation.
How should reconstituted stock be stored?+
Keep reconstituted material at 2–8°C for short-term use, or −20°C in single-use aliquots for longer-term storage. Note the reconstitution date on the vial.
How damaging are freeze-thaw cycles?+
Repeated freeze-thaw is one of the fastest ways to degrade peptide integrity. As a working rule, aim for no more than three freeze-thaw cycles on any given aliquot, and never on the primary stock.
Working with the Strive catalog
How are compounds shipped?+
Standard orders ship in insulated packaging with a coolant pack sized to the estimated transit window. Institutional accounts can request extended cold-chain packaging for longer routes.
Do you support bulk or standing orders?+
Yes. Reach out via the contact section with your compound list and volume estimate and we will scope a quote against current inventory and upcoming lot schedules.
Can I reserve a specific lot?+
Institutional accounts can request lot reservations for studies that need consistency across time points. Include the compound, quantity, and window in your quote request.