Luteinising Hormone (LH)
Luteinizing Hormone (LH) is a glycoprotein hormone produced by the anterior pituitary gland, essential for reproductive function. In females, LH triggers ovulation and stimulates the production of progesterone by the corpus luteum. In males, it stimulates testosterone production by the Leydig cells in the testes.
LH levels are tested to diagnose infertility, menstrual irregularities, menopause, polycystic ovary syndrome (PCOS), pituitary gland disorders, gonadal disorders, and issues with puberty timing.
This blood test helps evaluate reproductive health and detect hormonal imbalances or dysfunctions in the reproductive system.
Sample Requirements:
Gold SST Tube
Or
K2/3 EDTA Tube
Stability:
Serum:
14 days 2-8°C
5 days 20-25°C
6 months -20°C
Turnaround Time:
4 hours
Critical Value:
Not Applicable
Assay Interferences:
Recovery within ± 10 %
Bilirubin: <= 1129 umol/L or <= 66mg/dL
Hemoglobin: <= 0.621 mmol/L or <= 1000 mg/dL
Intralipid: <= 1900 mg/dL
Biotin: <= 205 nmol/L or <= 50 ng/mL
Rheumatoid Factors: <= 1500 IU/mL
Medications:
No common medications are found to interfere with this assay
Patients receiving high biotin dose therapy should wait at least 8 hours after the last dose administration before sample taking.
Reference Range (IU/L):
Adult Male: 1 - 8
Children: <1 - 5
Female (Follicular Phase): 1 - 12
Female (Ovulatory Phase): 16 - 104
Female (Luteal Phase): 1 - 12
Female (Post-menopausal): 16 - 66