How It Is Done continued...
For women, more than one blood sample may be needed to
get an accurate indication of luteinizing hormone (LH) levels. Several blood
samples may be taken in one day, or one sample may be taken each day for
several days in a row.
Urine test for ovulation
To determine if you are
ovulating, a sample of your first urine of the morning is usually tested. It is
important to follow the package directions exactly if you are doing home
ovulation testing on a urine sample.
- Place the collection container into the
stream of urine and collect approximately
4 Tbsp (60 mL) of
- Do not touch the rim of the container to your genital area,
and do not get toilet paper, pubic hair, stool (feces), menstrual blood, or
other foreign matter in the urine sample.
- Finish urinating into the
You may also be given a plastic test strip to hold in the
urine stream. The test strip has a color indicator on it that can detect
luteinizing hormone (LH).
How It Feels
You may feel nothing at all from the
needle puncture, or you may feel a brief sting or pinch as the needle goes
through the skin. Some people feel a stinging pain while the needle is in the
vein. But many people do not feel any pain (or have only minor discomfort) once
the needle is positioned in the vein.
Collecting a urine sample does not
normally cause any discomfort.
- You may develop a small bruise at the
puncture site. You can reduce the risk of bruising by keeping pressure on the
site for several minutes after the needle is withdrawn.
- In rare
cases, the vein may become inflamed after the blood sample is taken. This
condition is called phlebitis and is usually treated with a warm compress
applied several times daily.
- Continued bleeding can be a problem
for people who have bleeding disorders. Aspirin, warfarin (Coumadin), and other
blood-thinning medicines can also make bleeding more likely. If you have
bleeding or clotting problems, or if you take blood-thinning medicine, tell
your doctor before your blood is drawn.
There are no risks linked with
collecting a urine sample.
A luteinizing hormone test measures the
amount of luteinizing
hormone (LH) in a sample of blood or urine.
LH levels depend on a person's age and stage of sexual development, and,
in a woman, on the phase of her
menstrual cycle. The urine test to determine whether a
woman is ovulating detects only the presence (positive result) or absence
(negative result) of LH.
The normal values listed here—called a reference range—are just a guide. These ranges vary from lab to lab, and your lab may have a different range for what's normal. Your lab report should contain the range your lab uses. Also, your doctor will evaluate your results based on your health and other factors. This means that a value that falls outside the normal values listed here may still be normal for you or your lab. Ask your doctor for normal values of your luteinizing hormone
Luteinizing hormone in blood
| Menstruating women
international units per liter (IU/L)
| Women past menopause:
Luteinizing hormone in urine