The Canine Progesterone(P4) Test Cassette (Serum/Plasma) is based on Fluorescence Immunoassay for the quantitative determination of Progesterone in canine’ s serum, plasma with the use of Fluorescence Immunoassay Analyzer. (Test Range: 1 ng/mL-30 ng/mL) (Sampling volume: Serum/plasma: 75 μL)