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Luteinizing Hormone

Mnemonic

LH

Synonym

LH

Specimen Collection Requirements

Collect

Serum, one 5.0 mL gold (SST) or 7.0 mL red top tube

View image for Supply Item Number - 101235 or 101192

Handling

Allow serum to clot completely at room temperature (minimum – SST: 30 minutes, red top tubes: 60 minutes). Centrifuge and separate serum from cells ASAP.

Preferred Volume

1.0 mL Serum

Minimum Volume

0.3 mL Serum (0.8 mL minimum whole blood draw)

Transport

Refrigerated (2-8°C)

Rejection Criteria

Grossly hemolyzed or plasma specimens

Stability

AFTER SEPARATION FROM CELLS: Room Temperature (18-26°C): 8 hours;

Refrigerated (2-8°C): 7 days; Frozen (≤ -20°C): 2 months

Testing Information

Performed

7 days/week

Reported

24 hours

Method

Chemiluminescent Immunoassay

Reference Values

Reference Values

ADULT:
MALE:
20 - 60 years:    1.5-9.3 IU/L
70 and above:    3.1-34.6 IU/L

Age adjusted ranges.
FEMALE:
Follicular:    1.9-12.5 IU/L
Midcycle:    8.7-76.3 IU/L
Luteal:         0.5-16.9 IU/L
Postmenopausal:    15.9-54.0 IU/L
Pregnancy:            <0.1-1.5 IU/L
Pre-menses:          <0.5 IU/L
Contraceptives (estrogen):    0.7-5.6 IU/L

CPT Codes

83002

Last Updated: Thursday, February 11, 2021 07:52:21 PM


Client Services: 503-413-1234