Non-pregnancy diagnosis is essential for further inseminations. This module describes the background of NP diagnosis and the use of the progesteron assay in NP diagnosis.

The progesterone assay should initially be used for determining the efficiency of heat detection by farmers, the incidence of AI at inappropriate times, early diagnosis of non-pregnancy and infertility. Subsequently, or in some cases concurrently, it could be used for routine N-PD services.