Tests after a tick bite (encephalitis, Lyme disease)
tick bite test · tick-borne encephalitis test · Lyme disease test · borreliosis test · tick testing
These tests show whether a tick passed on an infection. The tick itself and your blood can both be tested.
After a tick bite, especially if you were in an area with tick-borne encephalitis, or if you get a fever or redness.
⏱ Duration: testing the tick usually takes 1 to 3 days; blood is not taken right away but at the time your doctor says
Be sure to tell your doctor
How to prepare
- The tick. If the tick was removed, put it in a small jar with a damp cotton ball and close it tightly. Take it to the lab as soon as you can.
- Timing. Antibodies do not show up in the blood right away, usually only a few weeks after the bite. Your doctor will say when to give blood.
- Food. Better not to eat for 3 to 4 hours before the blood test. Water is fine.
What to bring
- The tick in a closed jar, if you have it
- Your referral
- Your ID
- Your tick-borne encephalitis vaccine records
How it goes
- The tick is handed in to the lab and tested for infections
- A band is tied above your elbow, and you are asked to clench your fist a few times
- The skin is wiped with antiseptic
- A quick prick. Blood fills the tubes in a few seconds
- A cotton pad is pressed on the spot
What you'll feel
- A quick prick, like a pinch
- Sometimes slight dizziness. Tell the nurse, and they will help you lie down
Afterwards
- Press the cotton pad for 3 to 5 minutes
- For a month after the bite, watch for fever and check the bite site
- Your doctor decides about preventive treatment. Do not put off the visit
Contact a doctor straight away if
- A red patch around the bite is getting bigger: see a doctor
- Fever, severe headache, or body aches: see a doctor the same day
- Confusion, seizures, or weakness in arms or legs: call emergency services
Common questions
How do I remove a tick the right way?
Grab it close to the skin with tweezers or a thread, and slowly twist it out. Clean the spot with antiseptic.
If the tick is clean, do I still need a blood test?
Usually not, but your doctor decides. Watch how you feel for a month.