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Test Code LH Luteinizing Hormone, Serum, LAB878

Performing Laboratory

St. Luke's Hospital Laboratory

Specimen Requirements

Serum

Container/Tube: Gold-top serum gel tube(s) or plain, red-top tube(s)

Specimen: 0.5 mL of serum

 

Stability:

  • Room temperature:  8 hours
  • Refrigeration (2°- 8°C):  48 hours
  • Frozen:  Undetermined. 

 

Transport Temperature: Refrigerate ≤48 hours

Additional Information: If there is a delay in transport of >48 hours or if mailing time exceeds 48 hours, send specimen frozen in plastic vial.

Reference Values

 

Females

mIU/mL

Normally menstruating

 

Follicular phase

1.9–12.5 

Midcycle peak

8.7–76.3

Luteal phase

0.5–16.9

Pregnant

< 0.1–1.5

Postmenopausal

15.9–54.0

Contraceptives

0.7–5.6

 

Males

 

20–70 years

1.5–9.3

> 70 years

3.1–34.6

 

Children

< 0.1–6.0

 

Useful For

Abnormal LH levels with corresponding increased or decreased levels of FSH, estrogens, progesterone, and testosterone are associated with a number of pathological conditions.  Increased LH levels are associated with menopause, primary ovarian hypofunction, and polycystic ovary disease in females and primary hypogonadism in males. Decreased LH levels are associated with primary ovarian hyperfunction in females and primary hypergonadism in males.

Day(s) Test Set Up

Tuesday and Friday

STAT testing available Monday through Friday, day shift only

Methodology

Immunoenzymatic Chemiluminescent Assay

Test Classification and CPT Coding

83002