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Lab Dept:
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Chemistry
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Test Name:
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LUTEINIZING HORMONE (LH)
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General Information
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Lab Order Codes:
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LH
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Synonyms:
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LH
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CPT Codes:
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83002 – Gonadotropin; luteinizing hormone (LH)
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Test Includes:
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LH concentration measured in mIU/mL.
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Logistics
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Test Indications:
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Luteinizing hormone (LH) is secreted by the anterior pituitary in response to gonadotropin-releasing hormone. LH secretion is regulated by a balance of positive and negative feedback mechanisms involving the hypothalamic-pituitary axis and the pituitary. FSH and LH play a critical role in maintaining the normal function of the male and female reproductive systems.
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Lab Testing Sections:
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Chemistry (all specimens tested on the St. Paul campus)
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Phone Numbers:
Minneapolis:
Saint Paul:
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612-813-6280
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651-220-6550
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Test Availability:
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Daily, 24 hours
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Turnaround Time:
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1 – 3 day
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Special Instructions:
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N/A
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Specimen
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Specimen Type:
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Blood
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Container:
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Red top (plain, no gel) tube
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Draw Volume:
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1.5 mL (Minimum: 0.6 mL) blood
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Processed Volume:
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0.5 mL (Minimum: 0.2 mL) serum
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Collection:
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Routine venipuncture
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Special Processing:
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Lab Staff: Centrifuge specimen, remove serum aliquot into a plastic sample cup. Store at refrigerated temperatures for up to 48 hours.
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Patient Preparation:
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None
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Sample Rejection:
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Mislabeled or unlabeled specimen; specimens other than serum; gross hemolysis
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Interpretive
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Reference Range:
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Age:
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Range: mIU/mL
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Pediatrics (Prepubertal Children):
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<5.0 mIU/mL
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Adult Males:
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1.5 – 9.0 mIU/mL
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Menstruating Females:
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Follicular phase:
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2.0 – 9.0 mIU/mL
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Midcycle peak:
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17.5 – 72.9 mIU/mL
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Luteal phase:
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2.0 – 11.0 mIU/mL
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Critical Values:
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N/A
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Limitations:
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Heterophile antibodies may interfere with immunoassay tests.
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Methodology:
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Competitive Chemiluminescent Immunoassay
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References:
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Immulite 2000 LH Product Insert (12/10/2008) Siemens Healthcare Diagnostics
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DPC End User Procedure Manual Disk #0408111 (2005)
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National Committee for Clinical Laboratory Standards (NCCLS) (2002) Clinical Laboratory Technical Procedure Manuals; Approved Guideline-Fourth Edition GP2-A4
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Burtis CA, Ashwood ER, editors (1994) Tietz Textbook of Clinical Chemistry. 2nd ed. Philadelphia: W.B. Saunders
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Biorad Immunoassay Plus Control Product Insert (12/10/2008) PIL2KLH-19
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