Take your iPLEDGE test at home.
From November 2026, the FDA will allow at-home pregnancy tests for isotretinoin, as long as prescribers prevent misreading and falsification. PledgeCheck is how practices do it.
A one-time link, not an app
The dermatologist issues a QR link. The patient opens it on their phone and takes the test they already know.
A code they only see once they start
Tapping Start reveals a 4-character code. They write it on the test and photograph both, camera only, so an old photo can't stand in.
Every test becomes a record
Two independent readers check the photo, the prescriber approves in one tap, and each decision joins a hash-linked audit chain.
Once a month: a drive, a waiting room, a missed lecture.
A college student on isotretinoin has to prove she isn't pregnant every month. That means driving to the clinic, sitting in the waiting room and missing class for a five-minute test.
Then the clock starts. Her prescription has to be filled within seven days of the test. When a busy week pushes her past the window, she starts over, and loses treatment progress she already paid for in side effects.
PledgeCheck gives her that afternoon back, and gives her doctor a record they can defend.
- 1
- 2
- 3
- 4
- 5
- 6
- 7
Day 1 is the test. Miss day 7 and the patient needs a new test before the pharmacy can fill.
Four steps for the patient. One tap for the prescriber.
- 1
Open the link
Scan the QR code from the dermatologist. No app, no account.
- 2
Tap Start, get a code
A 4-character code appears only now. Write it on the test.
- 3
Photograph the test
Camera only. Nothing can be uploaded from the gallery.
- 4
Done
The photo goes to the clinic. The app never shows a result; the doctor decides.
What the prescriber sees, one card per test:
Ready for review
PT-1042 phase during · EN
Captured 3m ago
Grok read
Read complete
Confidence 96%
OpenCV read
Read complete
Confidence 93%
Readers agree
Code read K7R4 Matches issued code
Built so a test can't be faked, and a decision can't be rewritten.
A challenge code
Each link gets its own code, shown only after the patient taps Start. It has to appear in the photo, written on the test.
Two independent readers
A vision model and a separate OpenCV reader read every photo in parallel. When they disagree, or one didn't run, the card says so.
Photo-reuse detection
Every photo is compared against earlier submissions by perceptual hash, so last month's photo can't be sent again.
A hash-linked audit chain
Every decision is appended to a chain where each entry commits to the one before it, and the head is anchored on Solana.
Same patient every month, without storing who they are.
Patients are stored under pseudonyms. No names, no birthdates, no ID numbers. The clinic knows its patient; PledgeCheck only ever sees a pseudonym and a test.
What PledgeCheck stores
- Patient
- PT-1042
- Name
- Not stored
- Date of birth
- Not stored
- ID number
- Not stored