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LH, Pediatrics
Test Code36086
CPT Codes
83002
Preferred Specimen
0.5 mL serum
Minimum Volume
0.3 mL
Instructions
Collect blood specimens in serum red-top (no gel) or serum separator tube (plastic) and separate the serum immediately. Sample may be drawn in an serum separator red-top glass tube, but not submitted in this tube. Freeze immediately and submit to laboratory frozen.
Transport Container
Plastic, screw-cap vial
Transport Temperature
Frozen
Specimen Stability
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 28 days
Refrigerated: Unacceptable
Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis • Icteric • Glass tubes
Methodology
Immunoassay (IA)
Setup Schedule
Set up: Tues-Sat; Report available: 2-3 days
Reference Range
Age | Males (mIU/mL) | Females (mIU/mL) | |
0-2 Years | Not established | Not established | |
3-7 Years | ≤0.26 | ≤0.26 | |
8-9 Years | ≤0.46 | ≤0.69 | |
10-11 Years | ≤3.13 | ≤4.38 | |
12-14 Years | 0.23-4.41 | 0.04-10.80 | |
15-17 Years | 0.29-4.77 | 0.97-14.70 | |
Tanner Stages | Males (mIU/mL) | Females (mIU/mL) | |
I | ≤0.52 | ≤0.15 | |
II | ≤1.76 | ≤2.91 | |
III | ≤4.06 | ≤7.01 | |
IV-V | 0.06-4.77 | 0.10-14.70 |
Clinical Significance
LH is useful in evaluating gonadal dysfunction and assessing ovulation and infertility. LH is often interpreted with other laboratory tests such as Follicle Stimulating Hormone (FSH).