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Test Code 243 Follicle Stimulating Hormone (FSH)

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

MLAB: FSH

PowerChart: Follicle Stimulating Hormone Level

Epic: LAB86 Follicle Stimulating Hormone

MA Cerner: Follicle Stimulating Hormone.

Test Method

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

Specimen Requirement

0.5 mL serum or lithium heparin 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. If specimens are to be stored longer than 48 hours they must be stored frozen at -20° C.

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 hour after the specimen arrives at the testing site.

Reference Values

Male: 1.2-19.3 mIU/mL

Female:

  • Mid-Follicular Phase: 3.9-8.8 mIU/mL
  • Mid-Cycle Peak: 4.5-22.5 mIU/mL
  • Mid-Luteal Phase: 1.8-5.1 mIU/mL
  • Postmenopausal Phase: 16.7-113.6 mIU/mL

CPT Code Information

83001: Chemistry: Gonadotropin; follicle stimulating hormone (FSH)

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

15067-2 Follitropin [Units/volume] In Serum Or Plasma