A TB skin test (also called a Mantoux or TST) checks whether your body has reacted to tuberculosis bacteria. A nurse places a small amount of test fluid just under the skin of your forearm, and you come back 2 to 3 days later so we can read it.
One-step or two-step?
Your school or employer decides which you need. A one-step test is two visits: placement, then a reading 48 to 72 hours later. A two-step test is four visits: the first test and reading, then a second test placed 1 to 4 weeks later, and its reading. Two-step testing is common for health care students and new health care staff.
Plan your visits
- We book your reading when we place the test, so you leave knowing when to come back.
- The reading has to happen 48 to 72 hours after placement. Saturday hours help: a test placed on Wednesday or Thursday can be read on Saturday.
- Start early. A two-step test and any catch-up vaccines can take 4 to 6 weeks to finish.
Tell us before your test if you
- Have had a positive TB skin test before, or were treated for TB
- Had a live vaccine (such as MMR, chickenpox or yellow fever) in the last 4 weeks. A TB skin test is given on the same day as a live vaccine or 4 weeks after it.
- Have a weakened immune system or take medicines that affect it
Fees
| Service & inclusions | Fee (CAD) |
|---|---|
| One-step TB skin testPlacement, reading and documentation | $45 |
| Two-step TB skin testingBoth test-and-read cycles and documentation | $90 |
| Immunization-record review and routine placement formWithout physical examination | $65 |
If your result is positive
A positive TB skin test doesn’t mean you have active tuberculosis. Our Nurse Practitioner reviews your result and history, arranges a chest X-ray when it’s needed (usually covered by OHIP for insured patients), and explains the next steps for your school or employer.
Common questions
When is a TB skin test read?
How long does a two-step TB test take?
Is the TB skin test covered by OHIP?
Can I have my vaccines on the same day?
Book your visit
No referral or OHIP card needed. We confirm the service and total fee before your appointment.
