Good to knowOne result rarely tells the whole story. Your provider looks at your results together with your symptoms, exam, and other tests.
What the test is
Treatment with doxycycline is often started right away without waiting, because delays can be dangerous.
Why it's done
- Fever, headache, and body aches after a tick bite or outdoor activity in tick areas
Getting ready and what happens
- None.
How the test is done
- A health worker cleans the skin, puts a band around your arm, and draws blood from a vein with a small needle. It takes a few minutes.
What the results mean
Positive
Supports the infection; doxycycline treats most of them.
When a result needs quick action
Call 911Fever with a spreading rash, confusion, or trouble breathing after a tick bite
Call your provider todayFever within 2 weeks of a tick bite
Questions to ask your provider
- What do my results mean for me?
- Do I need to repeat this test or have other tests?
Risks
A blood draw is very safe. You may have slight pain or a small bruise where the needle went in.
Related conditions
Related medicines
Related tests
Sources
Last updated 2026-11-13.