The above graphs show a quick interpretation of the standard curves from two different human progesterone assays including the negative control bovine samples spiked with equivalent concentrations of progesterone. The Alpha Diagnostic assay appears promising, and we are currently waiting on testing of our negative control serum samples to validate low progesterone levels were present at the time those samples were taken. The Assay Designs kit is a more sensitive assay and has shown interference when bovine samples are used and an inability of the reagents to remain stable in the lab environment. (To view graphs in more detail click on image to increase size)