Luteinizing Hormone (1120)

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CPT Code:


Test Type: 1.0 mL Serum Kit based
Stability Time:


Refrigerated: 14 days

Reference Range:


Sex/Phase Optimal
N/A 1.7-8.6 mIU/mL


Sex/Phase Optimal
Follicular phase 2.4-12.6  mIU/mL
Ovulation phase 14.0-95.6  mIU/mL
Luteal phase 1.0-11.4 mIU/mL
Postmenopause 7.7-58.5  mIU/mL


LH is one of the gonadotropins of the anterior pituitary gland that works with FSH to induce ovulation of mature follicles and secretion of estrogen by the ovary. LH is also involved with the formation of the corpus luteum. In the male LH stimulates the development of the interstitial cells of the testes and their secretion of testosterone.


Immunoassay – Sandwich principle


  • LH is used to assess for dysfunctions within the hypothalamic-pituitary-gonadal system1-4
  • LH in conjunction with FSH is utilized for the following indications:1-4
  • Menopausal syndrome
  • Polycystic ovarian syndrome (PCOS)
  • Testosterone deficiency
  • Amenorrhea (causes)
  • Congenital diseases with chromosomal aberrations
  • High doses of biotin (> 5 mg/day) may interfere with assay results. Patient assumed to be refraining from biotin supplementation for at least 3 days prior to blood draw.


  1. Bhasin S, Cunningham GR, Hayes FJ, et al. Testosterone therapy in men with androgen deficiency syndromes: Endocrine Society clinical practice guidelines. J Clin Endorcinol Metab. 2010;95(6):2536-2559.
  2. Santen RJ, Allred DC, Ardoin SP, et al. Postmenopausal hormone therapy: an Endocrine Society scientific statement. J Clin Endocrinol Metab. 2010;95(7 Suppl 1):s1-s66.
  3. Kopper NW, Gudeman J, Thompson DJ. Transdermal hormone therapy in postmenopausal women: a review of the metabolic eff ects and drug delivery technologies. Drug Des Devel Ther. 2008;2:193-202.
  4. Goodman N, Cobin RH. Reproductive disorders. In: Camacho PM, Gharib H, Sizemore GW, eds. Evidence-Based Endocrinology. 3rd ed. Philadelphia, PA: Lippincott Williams & Wilkins. 2012:190-228

Collection Details:

Collection Instructions:

Preferred Specimen

1.0 mL serum (0.5 mL minimum) collected in serum separator tube (SST / Tiger Top)

Transport Temperature

Refrigerated (ship on frozen cold packs)


Refrigerated: 14 days