Progesterone - plasma or serum

Last updated: Saturday, 27, March, 2004

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Item Process
Specimen

5 mL blood in plain or lithium heparin tube.

Method

Immunoassay.

Reference Interval

Method dependent, typically:
Follicular phase: 2.0-4.5 nmol/L
Luteal phase: 7.0-70.0 nmol/L

Application

Investigation of infertility.

Interpretation

Failure of progesterone levels to increase in the latter part of the menstrual cycle indicates an anovulatory cycle or corpus luteum inadequacy.

Reference

Butt WR and Blunt SM. Ann Clin Biochem 1988; 25: 601-609.