Submit a tick for testing (Lyme disease)
Need to know
- Tick testing is offered through the Public Health Laboratory.
- Testing a tick does not diagnose Lyme disease in a person.
Before you start
- Please review the tips for Tick Removal & Collection.
- Write down when and where the tick was found.
- Place the tick in a small, sealed container or zip bag with a small piece of damp cotton or tissue.
- Ticks are accepted by mail only, see steps below.
What to do
Tick testing by mail
- Pay the tick testing fee online, or include a check as instructed on the payment portal. Tick identification costs $45. Fees may change.
- Complete the tick requisition form listed on the source page and include the payment receipt number if you paid online.
- Mail your tick and form to: Napa-Solano-Yolo-Marin County Public Health Laboratory, ATTN: Tick Testing, 2201 Courage Drive, MS 9-200, Fairfield, CA 94533.
What's next
What's next content
If you have symptoms or concerns, contact your healthcare provider. Tick testing does not replace medical care.
Related
Page last updated on May 7, 2026.
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