Lutropin, Serum


Sunquest Code:LH  
Epic Code:LAB87Epic Name:Lutropin
Synonyms:Interstitial Cell Stimulating Hormone; Luteinizing Hormone, LH
Methodology:Chemiluminescence
St Joseph: CMIA
Turnaround Time:Performed and reported 24 hours/day.


Collection Instructions

Specimen:Blood
Optimal Volume:2.5 mL
Minimum\Peds Volume:0.6 mL
Container:Red or gold (gel), St Joseph - Green (lithium heparin, no gel) (Green (lithium heparin, gel), Purple (EDTA), Red (no gel), St. Joseph - Red (no gel))
Contraindications:Large doses of biotin (10 mg or more per day) may cause clinically significant interference in luteinizing hormone levels. If interference is suspected, it is strongly recommended that biotin is discontinued for at least one week prior to retesting.


Processing and Shipping

Specimen Processing:Centrifuge and aliquot 1.25 mL, 0.2 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature. Alternatively, ship on dry ice.
Stability:Stability: 24 hours at room temperature; 7 days refrigerated.
Test Performed at or Referral Lab Chemistry  (UMMC-East Bank, Grand Itasca, St. Joseph's)


Interpretive

Reference Range:Grand Itasca (all ages): 10.87-58.64 IU/L
All Other Sites:
Age Female(IU/L) Male (IU/L)
1-15 d Not established Not established
16 d-6y 0.3-1.9 0.3-2.8
7-8y 3.0 or less 0.3-2.8
9-10 y 4.0 or less 0.3-2.8
11 y 6.5 or less 0.3-1.8
12 y 0.4-9.9 0.3-4.0
13 y 0.3-5.4 0.3-6.0
14 y 0.5-31.2 0.5-7.9
15 y 0.5-20.7 0.5-10.8
16 y 0.4-29.4 0.5-10.8
17 y 1.6-12.4 0.9-5.9
18-70 y See below 1.5-9.3
71 y & older See below 3.1-34.6

Pre-Menopausal, 18 y & older
  All Other Sites Grand Itasca
Follicular phase 1.9-12.5 2.12-10.89
Midcycle peak 8.7-76.3 19.18-103.03
Luteal phase 0.5-16.9 1.20-12.86
Postmenopausl 15.9-54.0 10.87-58.64
  All Other Sites
Tanner Stages* Male
(IU/L)
Female
(IU/L)
Stage I 0.3-2.7 2.0 or less
Stage II 0.3-5.1 6.5 or less
Stage III 0.3-6.9 0.3-17.2
Stage IV 0.5-5.3 0.5-26.3
Stage V 0.8-11.8 0.6-13.7
*Puberty onset occurs for boys at a median age of 11.5 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.
Puberty onset (transition from Tanner Srage I to Tanner Stage II) occurs for girls at a median age of 10.5 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.
Use:Evaluation of ovarian function and evaluation of infertility in a male partner.
   


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