Peptide vial tracker
This peptide vial tracker keeps a list of your mixed vials with the date each was mixed, the date to discard it and its concentration. It is saved only in this browser.
Your vials (0)
How does the peptide vial tracker work?
Add a vial with its name, the amount in it, the water you added and the date you mixed it. The tracker works out the discard date and counts down the days, and flags a vial three days before it is due.
It also shows the concentration, so you can check it against the peptide calculator when you work out how many units to draw.
How long does a mixed vial last?
Use the time on your product's label first. If a multiple-dose vial gives no other limit, pharmacies follow USP <797>: discard it 28 days after it is first opened or punctured.
That is why 28 days is the starting value; change it to match your label. The same rule applies to the bacteriostatic water vial itself.
Why doesn't it show a potency percentage?
Because there is no reliable data to calculate one for most peptides. Published stability studies cover a few approved products under specific conditions, and percentages on other sites are model estimates, not measurements.
What you can rely on is the label's storage time, keeping the vial cold and out of light, and discarding it early if it changes. The peptide storage guide explains each of these.
When should you discard a vial early?
Discard it straight away if the liquid turns cloudy, changes color, has particles or the vial is cracked. Do the same if it was left warm for a long time, frozen when the label says not to, or you think it may be contaminated.
Is my vial list private?
Yes: the list is stored only in this browser and never sent to us or anyone else. It won't appear on your other devices, and clearing your browser data removes it.
Frequently asked questions
How long is a mixed peptide vial good for?
Follow the label of your product. When a multiple-dose vial has no other instruction, the standard used by pharmacies (USP <797>) is to discard it 28 days after it is first opened or punctured.
Does the tracker estimate how much potency is left?
No. Nobody has published reliable day-by-day potency data for most peptides, so any percentage would be a guess. The tracker shows the facts you control: the mix date, the discard date you set and the concentration.
Where is my vial list stored?
Only in this browser, under the key rc:vials:v1. Nothing is sent to us, and clearing your browser data deletes it.
Should I keep using a vial after its discard date?
No. Past the discard date the risk of contamination and breakdown goes up, and you can no longer rely on the label. Discard it, and discard any vial that turns cloudy or has particles sooner.