Test Code LAB93515 Luteinizing Hormone (LH), Pediatrics, Serum
Additional Codes
LHPED
Useful For
Diagnosis of precocious puberty and delayed puberty in children
Method Name
Chemiluminescent Immunoassay (CIA)
Reporting Name
LH, Pediatrics, Sfor Pediatric Endocrine only
Specimen Type
SerumOrdering Guidance
This test is only available for pediatric patients. If testing request is for a patient 18 years of age or older, order LH / Luteinizing Hormone (LH), Serum.
Specimen Required
Supplies: Sarstedt 5 mL Aliquot Tube (T914)
Collection Container/Tube:
Preferred: Red top
Acceptable: Serum gel
Submission Container/Tube: Plastic vial
Specimen Volume: 0.25 mL
Collection Instructions:
1. Red-top tubes should be centrifuged, and the serum transferred to a plastic vial within 2 hours of collection.
2. Serum gel tubes should be centrifuged within 2 hours of collection.
Specimen Minimum Volume
0.13 mL
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Serum | Refrigerated (preferred) | 14 days | |
Frozen | 90 days |
Reference Values
Females
<1 year: <0.02-18.3 IU/L
1-8 years: <0.02-0.3 IU/L
9-10 years: <0.02-4.8 IU/L
11-13 years: <0.02-11.7 IU/L
14-17 years: <0.02-16.7 IU/L
Tanner Stages*
Stage I (1-8 years): <0.02-0.3 IU/L
Stage II: <0.02-4.1 IU/L
Stage IIl: 0.6-7.2 IU/L
Stage IV-V: 0.9-13.3 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.
Males
<1 year: <0.02-5.0 IU/L
1-8 years: <0.02-0.5 IU/L
9-10 years: <0.02-3.6 IU/L
11-13 years: 0.1-5.7 IU/L
14-17 years: 0.8-8.7 IU/L
Tanner Stages*
Stage I (1-8 years): <0.02-0.5 IU/L
Stage II: 0.03-3.7 IU/L
Stage IIl: 0.09-4.2 IU/L
Stage IV-V: 1.3-9.8 IU/L
*Puberty onset (transition from Tanner stage I to Tanner stage II) 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.
Day(s) Performed
Monday, Wednesday, Friday
Report Available
2 to 6 daysPerforming Laboratory
Mayo Clinic Laboratories in RochesterTest Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
83002
LOINC Code Information
Test ID | Test Order Name | Order LOINC Value |
---|---|---|
LHPED | LH, Pediatrics, S | 83103-2 |
Result ID | Test Result Name | Result LOINC Value |
---|---|---|
62999 | LH, Pediatrics, S | 83103-2 |