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Department of Health Services

Public Health Regional Laboratory

Lyme Organism in Ticks (“Tick Test”)


Test performed on ticks.

CPT Code



Indirect Fluorescent Antibody (IFA)

Specimen Storage

Place tick in a re-sealable plastic bag with a damp cotton ball or paper towel.

Specimen Transport

Ticks should be mailed to the laboratory during the COVID-19 emergency. A fee of $36 may be paid by check or most credit cards.  Please address mailed ticks to Sonoma County Public Health Laboratory, 3313 Chanate Rd., Santa Rosa, CA 95404

Setup Days

Specimens are processed Thursday mornings. Please submit your tick by the end of business on Wednesday to ensure your tick is included.


If your tick is positive, you will be notified via telephone by the end of business on Friday.

Lab Slip

Lyme Organism in Ticks(PDF: 108 Kb)

Please fill out the lab slip completely. Address and phone number are necessary for reporting.