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HelpTest Code LH Luteinizing Hormone (LH), Serum
Performing Laboratory
MaineGeneral Medical Center
Reference Values
Males
20-70 yrs: 1.5-9.3 mIU/mL
>70 yrs: 3.1-34.9 mIU/mL
Females
Normally menstruating
Follicular phase 1.9-12.5 mIU/mL
Mid-cycle phase 8.7-76.3 mIU/mL
Luteal phase 0.5-16.9 mIU/mL
Pregnant <0.1-1.5 mIU/mL
Post-menopausal 15.9-54.0 mIU/mL
Contraceptives 0.7-5.6 mIU/mL
Children <0.1-6.0 mIU/mL
Day(s) Test Performed
Tuesday and Friday
Specimen Requirements
Serum
Draw blood in a gold-top (serum separator) gel tube. Label the specimen with the patient’s name (first and last), date of birth, date and time of draw, phlebotomist’s initials, and as serum. Spin down and send 1 mL of serum refrigerated.
Specimen stability:
8 hours at room temperature
2 days refrigerated at 2-8°C
longer than 2 days, freeze at ≤ -20°C
Minimum volume:
1 mL
Specimen rejection criteria:
Hemolyzed specimens are not acceptable.
Test Classification and CPT Coding
83002