These can be prolonged heats, split heats, dog silent heats, or even absent heats
77% and an inter-assay coefficient of variation (CV) of 2
First estrus tends to be irregular
The progesterone level ranges between 4 and 8 ng/mL indicating that female dogs are ovulating
progesterone levels are around 5–8 ng/mL
Progesterone peaks at 15-30 days of diestrus at 15-80 ng/ml
The aim is to identify when the progesterone level reaches 5-10 ng/ml or more so the
At that time (typically about 1/3 to 1/2 way into heat) I would start progesterone testing