Best time to take an ovulation test: How ovulation tests work & when to start

When's the best time to take an ovulation test? Does an ovulation test truly work? When should you take the test? Does timing differ for unmedicated or medicated cycles? How exactly do you use the ovulation test strip? 

If you’re trying to conceive, then you’ve probably thought about some or all of these questions. You're scared that if you don't follow the proper timing, you'll miss the opportunity.

This is quite common,  so don't let these questions make you feel anxious or worried. Since you’re wondering, you have every right to know. It’s important to arm yourself with vital information for something as important as conception. This article provides clear guidance on when and how to take an ovulation test. So you can use this information to your advantage and get that baby.

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What are Ovulation Tests?

Ovulation tests are home tests that detect hormonal changes causing ovulation. You can perform the tests using either urine or saliva. Ovulation tests track the luteinizing hormone (LH) surge, which is responsible for ovulation.

An ovulation test works by detecting the LH surge, which likely predicts ovulation within 24 and 36 hours. This predicts the best time for conception. Because when ovulation occurs,  the released egg is viable for only 12-24 hours. Timing intercourse during this timeframe is key for conception.

PCOS may cause hormonal imbalances and make ovulation unpredictable. Hence, elevated LH levels may occur without ovulation taking place. Ovulation tests shoulkd be done with the right approach to get the right timing. 

How Ovulation Test Works 

There are various ovulation tests available. The popular ones include:

1. Urine Test

•  The Ovulation Predictor Kit (OPK) is a good example of strip tests.
• They are affordable and accessible home tests.
• They are similar to pregnancy tests because they use test strips.
• It detects the LH surge, which predicts ovulation time.

How to Use Ovulation Strips for urine 

• Read the instructions carefully for the specific kit.
• Grab a watch or a stopwatch on your phone and time yourself.
• Collect urine in a disposable cup or test midstream.
•  Dip the strip for 5-10 seconds.
• Wait for at least five minutes, then read the results.
• Compare the test with the control line. A dark line indicates a positive result. If negative, try again later.
• Track the results daily until you get positive results.

2. Digital LH Test:

•  These tests may have higher accuracy than strip tests to detect LH surge.
• Some advanced options also test for estrogen.
• If positive, it'll show a smiley face or yes, indicating peak fertility. 

3. Saliva Test:

• Lick a lens, allow it to dry, and check under the microscope for fern patterns. 
• Fern patterns show increased estrogen levels. Estrogen and luteinizing hormones work hand in hand to cause ovulation.  
• Fern patterns indicate you're approaching a fertile window, but if you see dots and not ferns, then you're not in your fertile window.
• However, this test isn't as reliable as other ovulation tests.

4. Blood Test

• Your doctor orders a blood test to measure progesterone, Follicle-Stimulating Hormone (FSH) and Luteinizing Hormone (LH). 
• The test is performed in a clinical setting and not at home.
• High progesterone levels confirm that ovulation has occurred.
• It's one of the most reliable test to confirm ovulation and evaluate irregular cycles.

Now you know different ovulation tests, but when's the best time to test your ovulation?

When to Take an Ovulation Test

It's best to take an ovulation test after your period. You'll need to note the duration of your menstrual flow. 

For Regular Cycles (28-35 days)

• You'll start an ovulation test around day 10-14 after your period flow.  
• You may start the 8th day, but continue daily checks till you detect an LH surge. The best ovulation test done at home is OPK.

For Irregular Cycles (Common Symptoms in PCOS)

• Use your shortest period to determine when you'll start your ovulation test. 
• Your cycle may range from 46, 32 and 57 days. 32 days is a short cycle. Most women expect ovulation 12-16 days after their period. But for safety, we'll use 17 days. So, 17 days subtracted from 32 would give you 15. You'll start an ovulation test on day 15.
• OPKs may give ‌false positives or negatives. You'll have to add other ovulation predictors:

1. Cervical mucus 
2. Basal Body Temperature 
3. Advanced Fertility monitoring 

For Medicated Cycles 

• Women may be placed on ovulation induction drugs(e.g letrozole, Comid, etc). 
• Track your cycle duration 
• Consult your healthcare provider on timing and fertility monitoring.

Conclusion 

Ovulation tests are a valuable step in your journey to conception. They help to predict your fertile window, increasing your chances of getting pregnant. While they're a helpful tool, they're not foolproof.

If you're struggling to get accurate results or conceive, don't hesitate to reach out to your healthcare provider for personalised guidance and support. They can help you navigate any specific challenges and provide tailored advice.

Ready to take the next step? Consult with your healthcare provider today to discuss your options and create a plan that's right for you.

Q: Do Ovulation Tests Really Work?

A: Yes, ovulation tests work by detecting the LH surge in your urine. When used correctly, they are one of the reliable means of knowing your fertile window. Though PCOS causes hormonal imbalances, they aren't the only option.

Q:Are ovulation tests accurate?

A: They have about 90%- 95% accuracy in predicting the LH surge. Digital LH tests have ‌ slightly higher accuracy. Accuracy is lower in PCOS or irregular cycles.

Q: Should I test with morning urine?

A: It depends on the brand's kit purchased. Most kits might recommend tests during the afternoon or evening. LH may be present in the body, but take awhile for it to be detected in your urine. It's also best to limit overdrinking water to avoid dilute urine. It may affect ovulation test results.

Should I take an ovulation test multiple times a day?

Yes, if your LH surge is short. You can take one in the afternoon and evening.

What if I Never See a Positive Result?

It's maybe a sign that your LH levels are below normal levels. You might have to see your healthcare provider. 

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