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Test Code 242 Luteinizing Hormone (LH)

Important Note

Human Anti-Mouse Antibodies (HAMA) may be present in samples from patients who have received immunotherapy utilizing monoclonal antibodies. Additionally, other heterophile antibodies such as human anti-goat antibodies may be present in patient samples. Manufacturers formulate assays to minimize the effects of these antibodies; however careful evaluation of patient results must be done when patients are known to have such antibodies.

Additional Codes

ALAB: LH

PowerChart: Luteinizing Hormone (LH)

MA Cerner: LH (Luteinizing Hormone)

Test Method

Two-Site Immunoenzymatic ("Sandwich") Assay; Beckman DxC700AU

Specimen Requirement

0.5 mL serum or plasma is required.

Additional Specimen Collection Information

Collect blood in a lithium heparin, green-top or red-top tube. PST and SST (gel tubes) are acceptable.Serum or plasma should be separated from contact with the cells within 2 hours of collection. Specimens not centrifuged within 4 hours of collection may be rejected. Refrigerate the specimen if unable to assay within 8 hours of collection.

Performance

Testing is performed Monday through Sunday.

Routine: Typically completed within 4 hours after the specimen arrives at the testing site.

STAT: Typically completed within 1 1/2 hours after the specimen arrives at the testing site.

Reference Values

Male: 1.2-8.6 mIU/mL

Female:

  • Mid-Follicular Phase: 2.1-10.9 mIU/mL
  • Mid-Cycle Peak: 19.2-103.0 mIU/mL
  • Mid-Luteal Phase: 1.2-12.9 mIU/mL
  • Postmenopausal Phase: 10.9-58.6 mIU/mL

CPT Code Information

83002: Chemistry: Gonadotropin; luteinizing hormone (LH)

Useful For

An adjunct in the evaluation of menstrual irregularities

Evaluating patients with suspected hypogonadism

Predicting ovulation

Evaluating infertility

Diagnosing pituitary disorders

LOINC Code Information

150501-5 Lutropin [Units/Volume] In Serum Or Plasma