At-home syphilis testing
The First To Know Syphilis Test Kit is designed for the situation people describe most often: a sore or rash appeared, and waiting a week for an appointment feels unbearable.
Diagnik Health Library · Updated

Step by step
- Wash your hands and clean a fingertip with the alcohol pad.
- Use the sterile lancet included in the kit.
- Apply one drop of blood to the test device as the card shows.
- Read the result after about 15 minutes.
After the result
- Reactive: contact a clinician for confirmation and staging. Syphilis is curable.
- Non-reactive: retest if the exposure was very recent, and see a clinician if symptoms persist.
- Invalid: no control line means no result — use a new test.
Limitations to keep in mind
- A screening result, not a diagnosis or a stage.
- Cannot distinguish current from treated past infection.
- Covers syphilis only.
Tests mentioned in this guide
Frequently asked questions
- Is the fingerstick painful?
- It is a brief pinprick using the sterile lancet included in the kit, similar to a blood-sugar check.
- Do I send the sample anywhere?
- No. The test runs at home and you read the result yourself in about 15 minutes.
Not sure which test you need?
Three questions, about a minute, and one clear recommendation. No account needed.
Find my testKeep reading
- syphilis
Syphilis testing
Screening finds antibodies; a clinician works out whether treatment is needed now.
- syphilis
Syphilis symptoms
The painless sore, the rash people mistake for an allergy, and the silent phase.
- sti testing
At-home STI testing
Instant tests you read yourself — what they are good at, and what they are not.
Related testing pages
Sources
Educational information only, not a medical diagnosis or treatment advice. Screening results always need confirmation by a clinician.
This guide is general health information about screening tests. It is not a diagnosis and does not replace care from a clinician. See our medical disclaimer.

