Mail Hay Tests To:

Sierra Testing Services

9450 E. Collier Rd

Acampo, CA 95220

Are you a new client?

What to Include with Test(s):

*See Sample ID Tags*

- Your billing information

- Phone number

- Preferred method of        obtaining results (fax,      email, etc.)

- Sample ID

- Product type

- Test to be run

>Equine program      tests must be  specifically labeled!

>Grasses ONLY!


STS  is contracted with Dairyland Laboratories in Arcadia, Wisconsin for wet chemistry analysis. Several packages are available. Dairyland results may take 7-10 days to be received. Due to an increase in processing fees, Nitrate testing is a flat rate of $15. For pricing on all other tests please contact us for your needs.


Important notice for 2021!!

Due to the decrease in sample input, we will not be opening our drop boxes this season.


We apologize for the inconvenience.

You may submit your samples directly to the lab, or by mail.


The after hours drop box located at the lab will always be available for dropping off samples from

5:00pm - 8:00am


As always, we strive to provide top quality service. We look forward to testing with you. 

If you are submitting a sample for retesting, the sample must be labeled as follows in order to avoid being submitted and charged as a new test.
- Must indicate that it is a retest
- Original Sample Number (indicated on provided analysis)
- Original Sample ID