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Test Code LH LUTEINIZING HORMONE

Important Note

24 hours before this blood test: Do not take any supplements containing biotin or Vitamin B7 which are commonly found in hair, skin, and nail supplements, and multi-vitamins.

Sufficient Biotin concentrations in serum can lead to falsely decreased results.

Methodology

Chemiluminescent Immunometric Assay (CIA)
Useful for the evaluation of menstrual irregularities, predicting ovulation, evaluating infertility, evaluating patients with suspected hypogonadism and to aid in the diagnosis of pituitary disorders.

Specimen Requirements

 

Submit only 1 of the following specimens:

 

Preferred:

Serum

Serum Gel Tube

Container/Tube: Serum gel tube(s)
Specimen Volume: 2 mL (minimum volume: 1 mL) of serum

Collection Instructions: Spin down within 4 hours of draw.

Note: Label specimen appropriately (serum).

 

Alternate:

Serum

Plain, Red-Top Tube

Container/Tube: Plain, red-top tube(s)
Specimen Volume: 2 mL (minimum volume: 1 mL) of serum

Collection Instructions: Spin down within 4 hours of draw.

Note: Label specimen appropriately (serum).

 

Alternate:

Plasma

Container/Tube: Green-top (lithium heparin) tube(s) or lavender-top (EDTA) tube(s)

Specimen Volume: 2 mL (minimum volume: 1 mL) of plasma

Collection Instructions: Spin down within 4 hours of draw.

Note: Label specimen appropriately (plasma).

Day(s) Test Set Up

Monday through Friday

Reference Values

Females

Premenopausal:

Follicular: 2.6-12.1 IU/L

Midcycle: 27.3-96.9 IU/L

Luteal: 0.8-15.5 IU/L

Postmenopausal: 13.1-86.5 IU/L

Performing Laboratory

Logan Health Medical Center-Chemistry

Test Classification and CPT Coding

83002

Specimen Transport Temperature

Refrigerate