What is an LH Test?
An LH test is done by analyzing the levels of luteinizing hormone in the urine with a test strip. The tests are commonly known as ovulation tests or OPKs (Ovulation Prediction Kits).
Click the following link to read more: What is LH and why should I test for it?
You can buy the LH test strips in our webshop or at your local pharmacy.
When to test for LH?
An increase in LH is usually found within 24-48 hours before ovulation. It is therefore best to test in the days days before your expected ovulation.
The Natural Cycles app lets you know when the best time to test is by indicating "LH" in the predictions on the days you should take an LH test — you can see the predictions in the Month and Today views. These LH suggestions are optimized so that you have to take as few tests as possible without missing your peak. You can, however, always test more (or less) than what is suggested.
How to take a Natural Cycles branded LH test
If you use LH tests from a brand other than Natural Cycles, always follow the directions of the manufacturer.
- Collect a urine sample in a clean, dry plastic or glass container.
- Remove the test strip from the sealed pouch.
- Immerse the strip into the urine with the arrow pointing towards the urine. Take the strip out after three seconds and lay the strip flat on a clean, dry, non-absorbent surface (such as the closed toilet lid).
IMPORTANT: Do not allow the urine level to exceed the MAX (marker line); otherwise, the test will not perform correctly.
- Read the results immediately once five minutes have passed. Do not wait to read the results after longer than five minutes.
You can take LH tests as many times a day as you wish to. If you see a second colored band, but it's not strong enough to be considered positive, it can be a good indication to test a few hours later.
To ensure that you do not miss your LH peak, it is recommended to limit the intake of fluids for a few hours before testing (to prevent the LH from diluting).
The picture above shows a negative LH test result.
Please click into these links to understand how to read the results and why you should test for LH.