Find out if it's working.
Order a blood test from your phone. Log what you take. Then retest, and see what actually changed.
Built by Tate Greenfield, who has read
over 25,000 blood test results.
One app for every number that matters
One number. No idea if it's good, bad, or moving.
Now you can see which way it's going.
Every change you made, and what it did.
Test. Change something. Retest.
Most people get one blood test, change something, and never check again. Retest closes the loop.
Get the right test.
Tell us what you take. We pick the test that fits, and you order it in the app. Get your blood drawn at a lab near you, or at home.
Log what you take.
Shots, pills, anything. Any dose, any schedule. It takes five seconds, and it reminds you when the next one is due.
Retest. See what changed.
Every result lands on one chart, with every change you made marked on it. Now you know what worked.
Get the right test.
Tell us what you take. We pick the test that fits, and you order it in the app. Get your blood drawn at a lab near you, or at home.
Log what you take.
Shots, pills, anything. Any dose, any schedule. It takes five seconds, and it reminds you when the next one is due.
Retest. See what changed.
Every result lands on one chart, with every change you made marked on it. Now you know what worked.
Everything in one place.
Your tests, your doses, your reminders and your results. No more notes app, no more spreadsheet.
Log a dose in 5 seconds.
One tap, and your streak keeps going.
Never run out.
It counts down your vial for you.
Reminders that help.
Shots, retests and check-ins, on time.
A lab near you.
Walk in, or have someone come to you.
Your vitamin D is low. Here's what that means, and what to ask your doctor.
Results in plain words.
No jargon. Just what it means and what to ask.
Share with your doctor.
One tap. Clean PDF.
Never had a blood test? Easy.
You don't need your doctor to order it, and you don't need to know which test to ask for.
Order it
Pick your test in the app. We tell you which one fits.
Get your blood drawn
At a lab near you, or someone comes to your home.
Get your results
In 2 to 4 days, right in the app, in plain words.
Retest
We remind you when it's time to check again.
blood test results read by Tate
days to get your results back
to log a dose
Made for you if you're...
Never had a blood test
Start here. We tell you what to ask for and how to get it.
On TRT
See your levels before and after every dose change.
On a weight-loss shot
Keep an eye on your numbers while the weight comes off.
Taking peptides or supplements
Log every one and see if anything actually moved.
“Most people never get a blood test. The ones who do test once, change something, and never check again. So they never find out if it worked. I built Retest so you can.”
Tate Greenfield · founder
Your data is yours.
Ask for a copy any time.
Email us and we send you everything we have.
Delete it yourself, any time.
Your account and every file, gone.
Never sold.
No ad trackers in the app. Ever.
Be first in line.
Founding members get in first, at a founding price.