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Test ID: LH
Luteinizing Hormone (LH), Serum

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Secondary ID A test code used for billing and in test definitions created prior to November 2011


Reference Values Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.


0-14 days: not established

15 days-10 years: 0.3-2.8 IU/L

11 years: 0.3-1.8 IU/L

12 years: 0.3-4.0 IU/L

13 years: 0.3-6.0 IU/L

14 years: 0.5-7.9 IU/L

15-16 years: 0.5-10.8 IU/L

17 years: 0.9-5.9 IU/L

> or =18 years: 1.8-8.6 IU/L



Stage l: 0.3-2.7 IU/L

Stage ll: 0.3-5.1 IU/L

Stage lll: 0.3-6.9 IU/L

Stage lV: 0.5-5.3 IU/L

Stage V: 0.8-11.8 IU/L

*Puberty onset occurs for boys at a median age of 11.5 (+/- 2) years. For boys there is no proven relationship between puberty onset and body weight or ethnic origin. Progression through Tanner stages is variable. Tanner stage V (adult) should be reached by age 18.


0-14 days: not established

15 days-3 years: 0.3-2.5 IU/L

4-6 years: < or =1.9 IU/L

7-8 years: < or =3.0 IU/L

9-10 years: < or =4.0 IU/L

11 years: < or =6.5 IU/L

12 years: 0.4-9.9 IU/L

13 years: 0.3-5.4 IU/L

14 years: 0.5-31.2 IU/L

15 years: 0.5-20.7 IU/L

16 years: 0.4-29.4 IU/L

17 years: 1.6-12.4 IU/L

> or =18 years


Follicular: 2.1-10.9 IU/L

Midcycle: 20.0-100.0 IU/L

Luteal: 1.2-12.9 IU/L

Postmenopausal: 10.0-60.0 IU/L



Stage I: < or =2.0 IU/L

Stage II: < or =6.5 IU/L

Stage III: 0.3-17.2 IU/L

Stage IV: 0.5-26.3 IU/L

Stage V: 0.6-13.7 IU/L

*Puberty onset (transition from Tanner stage I to Tanner stage II) occurs for girls at a median age of 10.5 (+/- 2) years. There is evidence that it may occur up to 1 year earlier in obese girls and in African American girls. Progression through Tanner stages is variable. Tanner stage V (adult) should be reached by age 18.


Pediatric ranges derived for DXI method from analytic comparison to reference method in: Elmlinger MW, Kuhnel W, Ranke MB: Reference ranges for serum concentrations of lutropin (LH), follitropin (FSH), estradiol (E2), prolactin, progesterone, sex hormone-binding globulin (SHBG), dehydroepiandrosterone sulfate (DHEAS), cortisol and ferritin in neonates, children and young adults. Clin Chem Lab Med 2002;40(11):1151-1160