Welcome to the Companion Animal Vaccine and Immuno Diagnostic Service Laboratory (CAVIDS) home page!

Our fees have gone up for 2026 due to tariffs – please see either “Titer Testing Details” or “Test Fees” tabs for further information

NOTE:  Do Not Use UPS for international shipping to CAVIDS Laboratory due to excessive brokerage fees.  International clients please see specific tab for new import requirements.

Our mailing/shipping address is:
CAVIDS/Titer Testing Laboratory
Room 4337 School of Vet Med
2015 Linden Drive West
Madison, WI 53706

(608) 263-4648

Email – Laurie (dot) Larson @ wisc (dot) edu

A printable mailing label is available in a separate tab

CAVIDS Laboratory affirms the inherent worth and dignity of all persons

(Updated 4 December 2025)