Target Canine Ovulation 6 Test Kit
Determine whelping date (24 hour window) by measuring progesterone levels just before expected whelping date. About 24 hours before whelping, progesterone levels dramatically drop to very low levels. (C1 result)
A centrifuge is recommended for spinning blood down prior to testing. See Multispeed Mini Centrifuge (75144-795) and 1.5ml Capped Tubes (75195-183)
Absent a centrifuge, allow blood to clot at room temp for 30-60 minutes or until clear serum collects in top of tube