Progesterone

LABOKLIN Service ID: 135

• Measurement is performed to monitor luteal function.
• Female dog: determination of the ovulation time, determination of the optimum time for mating, diagnosis of corpus luteum insufficiency (serial measurements)
• Dog, ferret: For the diagnosis of sex steroid-producing disorders of the adrenal cortex (see 17 OH-progesterone)
• Rabbit: To diagnose ovarian (residual) tissue, an HCG stimulation test should be performed with two progesterone measurements taken 5–7 days apart. Single determinations are only diagnostically conclusive if positive.
• Llama, alpaca: Diagnosis of pregnancy from the 21^st day of gestation onwards. In late pregnancy (10^th/11^th month), the determination of oestrone sulphate is also possible.
• Cattle, horse, sheep, goat: Can be used during early pregnancy to confirm conception. However, as there are also increases in progesterone levels in the regular cycle, this difference is only diagnostically useful during the cycle-dependent decrease in progesterone. In horses and cattle, only samples which were taken between the 18^th and the 20^th day after ovulation are useful and only prove that the animals are not in heat again at the expected time. Progesterone is not specific to pregnancy. The test cannot differentiate as to whether the corpus luteum has formed during the cycle or as a result of gestation.
• Horse, donkey: Pregnancy-specific hormones can be determined between the 45^th and 100^th day (see PMSG) and from the 110^th day onwards until approx. 1 week before foaling (see oestrone sulphate).

Material	serum 0.5 ml
Method	CLIA (chemiluminescence assay)
Species list	dog, cat, rabbit, guinea pig, ferret, horse, donkey, cattle, camelids, sheep, goat, others on request
Duration	Reporting of results on the day the sample is received (Mon–Sat)