| Preferred Sample | Formalin fixed tissue, formalin fixed paraffin embedded tissue |
| Fee | $Varies |
| Schedule | Days Tested As needed Turnaround Time 7 business days |
| Description | Immunohistochemistry (IHC) staining will be temporarily referred to an accredited veterinary diagnostic laboratory starting July 16, 2025. Please note that in addition to the referral test fee, shipping and handling fees will apply. |
| Species | Varies |
| Shipping Requirements | In cold weather, add 1 part ethanol to 9 parts 10% buffered formalin to prevent freezing during transit. |