LHLuteinising hormone (LH)
What it shows
The pituitary hormone that triggers ovulation; with FSH, on day 3–5 of the cycle.
Your doctor reads the result: the laboratory does not diagnose or prescribe. The result sheet gives the reference range beside each value.
Sample
- Short code
- LH
- What is taken
- Blood from a vein
- Container
- Yellow-top gel serum tube
- Turnaround
- 1 working days for samples taken by 12:00; result at 18:00
- At home
- Yes, a nurse comes to your home
Preparation
- At least 4 hours after a light meal
- The sample is taken before 11:00
- Day 3–5 of the cycle
- No hard exercise the day before.
- Sit for 10–15 minutes after you arrive, then give blood.
From the same section
- TSHThyroid-stimulating hormone (TSH)₼20
- FT4Free thyroxine (FT4)₼20
- FT3Free triiodothyronine (FT3)₼20
- Anti-TPOThyroid peroxidase antibodies (anti-TPO)₼26
- FSHFollicle-stimulating hormone (FSH)₼22