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Laboratory Medicine

Test Directory / Luteinizing Hormone

Luteinizing Hormone

Brown clotted serum, gel barrier

TestLuteinizing Hormone
Common AbbreviationsLH
Tube typeBrown clotted serum, gel barrier
Clinical IndicationLH is often used in conjunction with other tests (FSH, testosterone, oestradiol, and progesterone) in the investigation of infertility in both men and women. LH levels are also useful in the investigation of menstrual irregularities in women and low testosterone levels in men. Measurement may also aid in the diagnosis of pituitary gland disorders. In children, FSH and LH are used to diagnose delayed or precocious (early) puberty and investigate problems with growth.
Specimen TypeBlood
Sample typeSerum
Minimum Volume0.5mL If requesting more than 10 tests please send an additional brown clotted serum sample.
Special PrecautionsNo special requirements
Stability5 days at 20 - 25°C, 14 days at 2 - 8°C and 6 months at -20°C
Turnaround TimeInpatient: 24 hours Outpatient/ GP: 24 hours
LaboratoryYork and Scarborough
Reference IntervalFemales: Follicular: 2.4 - 12.6 IU/L Ovulation: 14.0 - 95.6 IU/L Luteal: 1.0 - 11.4 IU/L Post-menopausal: 7.7 - 58.5 IU/L Males: 1.7 - 8.6 IU/L (Quoted by the manufacturer)
LimitationsIn rare cases, interference due to extremely high titres of antibodies to analyte?specific antibodies, streptavidin or ruthenium can occur. These effects are minimized by suitable test design.
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