LH

 

Alternative names, keywords

Luteinising hormone

Samples required

● Clotted blood (gold cap, 5 mL tube). Smaller tubes are available for paediatric samples.

State day of cycle if known.

Test indications

Investigation of amenorroea, infertility, suspected gonadal failure.

Not recommended for routine diagnosis of menopause.

Factors affecting test performance/ results

Samples should not be taken from patients receiving therapy with high biotin doses (i.e. > 5 mg/day) until at least 8 hours following the last biotin administration.

In rare cases, interference due to extremely high titres of antibodies to analyte-specific antibodies, streptavidin or ruthenium can occur.

Results should always be assessed in conjunction with the patient’s medical history, clinical examination and other findings.

Reference range

follicular

 2.4 - 12.6 IU/L

ovulatory

 14.0 - 95.6 IU/L

luteal

 1.0 - 11.4 IU/L

post menopause

 7.7 - 58.5 IU/L

males

 1.7 - 8.6 IU/L

Source: Roche Cobas® LH kit insert, 2024-04, V9.0 

 

Paediatric ranges are dependent on pubertal status rather than age. LH (IU/L, 2.5th-97.5th percentiles):

Tanner Stage

 Males Females

1

 ≤0.10 - 1.30 ≤0.10 - 0.14

2

 ≤0.10 - 2.91 ≤0.10 - 4.01

3

 0.65 - 4.19 ≤0.10 - 7.93

4

 1.16 - 6.23 0.68 - 19.8

5

 1.15 - 7.17 0.48 - 6.23

Source: Reference Interval Study for children and randomly selected adults. Elecsys® Fertility Tests: Albumin, DHEA-S, hCG+ß, hCG STAT, FSH, LH, Progesterone II, Prolactin II, SHBG II.  ©2015 Roche  Edition: 2015-7.

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Turnaround time

Same day

Enquiries

Biochemistry (Automation)
 
Details