Luteinizing Hormone (LH), Serum or Plasma

Test Code

CPT Codes

Preferred Specimen
1.0 mL serum from SST

Minimum Volume
0.5 mL

Other Acceptable Specimens
1 mL plasma from Green top (Lithium Heparin) or 1 ml serum from Red Top

Specimen Stability
Specimen Type Temperature Time
Serum SST Refrigerated 7 days
Red Top – Separated* Refrigerated 7 days
Plasma Li Hep Refrigerated 7 days
*Centrifuge and aliquot into a plastic vial.


Setup Schedule
Monday through Sunday; Continuously

Report Available
Same day

Reference Range
Pre-puberty: <1.0 mIU/mL
Adults: 1.0-9.0 mIU/mL
Pre-puberty: <1.0 mIU/mL
Follicular: 1.0-18.0 mIU/mL
Midcycle: 20.0-80.0 mIU/mL
Luteal: 0.5-18.0 mIU/mL
Postmenopausal: 12.0-55.0 mIU/mL

Performing Laboratory
North Colorado Medical Center Laboratory

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.