Test your DSIP
Send one DSIP vial and get a record anyone can verify: whether it is really DSIP, how pure it is, and how many milligrams are in it against the label.
What is tested
Identity, purity and amount
Price confirmed at launch
- Identity: is the molecule in the vial the one on the label
- Purity: HPLC peak area percentage
- Amount: measured milligrams against the label claim
Turnaround: Confirmed when the partner lab is signed
Identity, purity, amount and endotoxin
Price confirmed at launch
- Everything in the standard package
- Bacterial endotoxin by LAL assay
Turnaround: Confirmed when the partner lab is signed
Endotoxin only
Price confirmed at launch
- Bacterial endotoxin by LAL assay
- Does not establish identity, purity or amount
Turnaround: Confirmed when the partner lab is signed
Method
- Identity
- Mass spectrometry, looking for a molecular weight of about 848.8 g/mol.
- Purity
- HPLC with UV detection, reported as the main peak's share of total peak area.
- Amount
- HPLC quantitation against a reference standard, reported in milligrams per vial.
- Analysed by
- Partner laboratory to be announced
Sample requirements
- One sealed, unopened vial, with its label intact. Opened vials cannot be tested because the contents may have changed.
- A clear photo of the label and batch code before you send it.
- Any label amount can be tested.
- Tell us where you bought it. The vendor name stays private unless you choose a public record.
What a DSIP test often catches
- Oxidation of the N-terminal tryptophan.
- Loss of the tryptophan from the chain.
- Glycine deletions and insertions.
- Aspartimide chemistry at Asp5.
Several buyers with the same batch? Split a group test.