Abstract
Abstract A practical, rapid, reliable and isocratic reversed-phase HPLC method is described for the determination of progesterone; a method important for determining in cows (1) early pregnancy, (2) reproductive disorders, and (3) timing of artificial insemination. The method is reproducible with a detection limit of 0.5 ng/peak (400 pg/μl) at 254 nm (0.005 AUFS); down by nearly 10-fold from other methods and using simple 254 nm detection. Radioimmunoassay of all eluting fractions demonstrated specificity.
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