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Choose collection locationHormones & Fertility · Individual laboratory test
LH helps trigger ovulation and supports testosterone production. Its concentration varies with the menstrual cycle and the reason for testing.
Clinical authorDr Nirupama SabhapathySpecialist Clinical Pathology
Understanding the test
Also called Fertility Hormone (LH)
A clinician may use LH to investigate ovulation, menstrual changes or testosterone production, often alongside FSH and other hormone tests.
LH helps assess communication between the pituitary and the ovaries or testes.
A clinician may interpret the level alongside cycle dates, estradiol and FSH.
Before your sample
Fasting is generally unnecessary for LH alone. Confirm the intended day of the cycle with your clinician when the measurement concerns ovulation or fertility treatment.
A clinician takes a small sample of blood from a vein. The laboratory uses serum, the liquid separated from the blood after it clots.
Smart Report
24 hoursLaboratory turnaround
The mid-cycle surge can be brief and substantial. The clinical question and cycle timing determine whether a given value is expected.
From sample to follow-up

Choose your location, add the test to your care bag and select a time. If you are booking for someone else, assign the test to them in checkout.
Choose collection locationLook for Luteinizing Hormone (LH) in your report. Use the sample type and collection time when comparing it with an earlier report.
Explore Smart Report
Ask how the LH sampling time fits the event being assessed, particularly if the question concerns ovulation.
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Patient questions
A brief LH surge can be missed by a single measurement. Cycle timing and other evidence help a clinician assess whether ovulation occurred.
Yes. Combined hormonal contraception suppresses LH, so a result taken while you use it says nothing about your underlying ovarian function. Testosterone therapy and anabolic steroids suppress it in the same way. Do not stop any of these for the test without your doctor's advice, but mention them, along with any fertility drug or biotin supplement.
Not necessarily. LH surges sharply for a short window in the middle of a normal cycle, so a sample taken then reads high in a woman whose cycle is completely ordinary. This is why the day of your cycle is recorded with the result, and why the test is usually repeated at a defined point rather than acted on immediately.
KEEP EXPLORING
Open a package to see exactly which tests it includes.

A focused panel of key female reproductive hormones to assess cycle health, fertility, and hormonal balance, with results in 24 hours

Total testosterone, LH and FSH from one blood sample, to assess testosterone levels and the signals that drive them.

A reproductive hormone panel to evaluate the key drivers of female fertility and hormonal balance.

A reproductive hormone panel to evaluate the key drivers of male fertility and hormonal balance.
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Written by Dr Nirupama Sabhapathy, Specialist Clinical Pathology. Medically reviewed by Dr Joyce Jose, Specialist Clinical Pathology, on .
Catalogue information and AED price checked on 2 November 2026. Clinical suitability, preparation, collection arrangements and turnaround are confirmed for your selected test.