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Kansas State Veterinary Diagnostic Laboratory

Kansas State Veterinary Diagnostic Laboratory
Kansas State University
1800 Denison Avenue
Manhattan, KS 66506
Get Directions

KSVDL Client Care
General Inquiries
785-532-5650 or
Fax: 785-532-4835

KSVDL Business Office
Billing Inquiries
785-532-3294 or
Fax: 785-532-3502

Regular business hours:
8 am - 5 pm Mon.-Fri.
8 am - noon Sat.

Diagnostic Insights for Veterinary Nurses
April 2020

Test Sample Size Guidelines

By Rachel Corn, VT

To ensure the best possible results from testing, a correct sample size is necessary. Some tests can be completed on a very small amount of sample, while others require a larger section. 

Below is a table with some of the common tests and the appropriate sample size. If you are requesting that more than one test be completed on a single sample, a larger sample will be required. In all cases, it never hurts to send an extra sample, in case additional testing is needed. 


Fecal Float0.2 oz of feces1 Hershey Kiss
CultureFor fresh tissue:
A good rule of thumb is to send a piece 3 in. x 3 in.
1 tennis ball
PCR0.2 oz of tissue or feces or 2.0 ml of fluid/whole blood1 large marshmallow
Serology0.5 ml of serum for most tests-
Virology0.5 ml of serum for most tests-
Necropsy histopathologyTissue no more than 0.5 in. thick-
Histopathology on a mass or spleenThe entire mass or spleen-


For more information, please visit Tests and Fees or call Client Care at 866-512-5650.


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