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.
|TEST||SAMPLE||EQUAL TO SIZE OF:|
|Fecal Float||0.2 oz of feces||1 Hershey Kiss|
|Culture||For fresh tissue:|
A good rule of thumb is to send a piece 3 in. x 3 in.
|1 tennis ball|
|PCR||0.2 oz of tissue or feces or 2.0 ml of fluid/whole blood||1 large marshmallow|
|Serology||0.5 ml of serum for most tests||-|
|Virology||0.5 ml of serum for most tests||-|
|Necropsy histopathology||Tissue no more than 0.5 in. thick||-|
|Histopathology on a mass or spleen||The entire mass or spleen||-|
For more information, please visit Tests and Fees or call Client Care at 866-512-5650.