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Test Code LH Luteinizing Hormone, Serum, LAB87

Performing Laboratory

St. Luke's Hospital Laboratory

Specimen Requirements

 

Container/Tube:

Preferred: Green top (lithium heparin)

Acceptable:  Gold-top serum gel tube(s) or plain, red-top tube(s)

Specimen: 0.5 mL 

Minimum:  0.012 mL plus dead space

Stability:

  • Room temperature:  5 days
  • Refrigeration (2°- 8°C):  14 days
  • Frozen:  6 months at -20° Celsius Freeze only once.

 

Transport Temperature: Refrigerated

 

Reference Values

Children <8 years

<6 mIU/mL

Males 8 – 70 years

1.5 – 9.3 mIUI/mL

Males ≥70 years

3.1 – 34.6 mIU/mL

Females ≥8 years

 

Follicular phase

1.9 – 12.5 mIU/mL

Midcycle phase

8.7 – 76.3 mIU/mL

Luteal phase

0.5 – 16.9 mIU/mL

Pregnant

<1.5 mIU/mL

Postmenopausal

15.9 – 54.0 mIU/mL

Contraceptives

0.7 – 5.6 mIU/mL

 

 

Day(s) Test Set Up

Monday-Sunday

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.

Methodology

Immunoenzymatic Chemiluminescent Assay

Test Classification and CPT Coding

83002

Report Available

Stat 1 hr within receipt

Routine 2 hrs within receipt