Specimen Requirements



Specimen Requirement

Collect SST, plain red top or green lithium heparin, 1 mL serum/plasma required. If collecting a SST, after 30 minutes of clotting, centrifuge and send. If collecting a red top or green top, centrifuge, transfer the serum/plasma to a screw top transport tube and indicate sample type on the tube before sending.

Do not collect oxalate, EDTA or citrate plasma.


Electrochemiluminescence immunoassay (ECLIA)


Room temp: 15 days, Refrigerated: 15 days, Frozen: 15 days

Reference Range

By Report*


1 day

Clinical Use

Used to establish the presence of a functioning corpus luteum or luteal cell function; confirm basal body temperature measurements for the occurrence of ovulation; obtain an indication of the day of ovulation; evaluate the functional state of the corpus luteum in infertility patients; assess placental function during pregnancy; ovarian function test.

Test Code