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 Progesterone Proficiency Program

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​This program was developed for clients who run in-house progesterone tests and who want to maintain a level of quality assurance to their breeders.​


Quarterly comparison of progesterone results across laboratories, including client participants,​ to assess accuracy of results. ​


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Participating clients will both submit and receive samples for progesterone analysis on a quarterly basis during the months of January, April, July and October.

Each participating client/laboratory will be expected to submit samples by the 15th of that month.

Specific instructions for submitting samples will be provided.

Participants will submit their test results to Marshfield Labs by the end of the testing month. Results of progesterone assays will be recorded and reviewed by Marshfield Labs personnel. A report of all laboratory results will be issued to the participating client.​

At the end of each quarter Marshfield will mail the client:

  • Progesterone Comparison Summary
  • Letter of Explanation specifying pass/fail


An annual fee will be assessed to participating clients for the subsequent year of testing. A Certificate of Completion will be issued at the end of the year.

Further consultation services available for additional fees.

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Billing Questions: 715-389-0616

Account Technical Support: 866-522-2611​​​​​

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