What is the reason for a weak positive result on an ovulation test strip seven days after taking ovulation injection?

Patient's question:

All symptoms: I got the ovulation shot on the 6th, had intercourse on the 7th and 8th, and today the ovulation test strip shows a weak positive. Onset time and cause: Treatment history: Desired help: What's going on? Is it because of the shot?

Doctor's answer:

1、When the ovulation test strip shows a weak positive, the first thing to consider is whether there is a problem with your operation. Correct operation: The depth of the test strip inserted into the urine should not exceed the MAX mark line.
2、Check if there is a problem with how you store the ovulation test strips, and whether the sensitivity failure is due to improper storage. Correct storage method for ovulation test strips: The test strips should be stored in a room temperature environment, away from light. If stored in a refrigerator, they should be brought back to room temperature before use.
3、A weak positive result on the ovulation test strip is often caused by improper urine usage. Check if you are collecting urine according to the following method. Correct urine collection method: Use a clean, dry container to collect urine. Do not use morning urine. The best time to collect urine is between 10 a.m. and 8 p.m. Try to use urine samples taken at the same time every day. Two hours before collecting urine, reduce fluid intake, as diluted urine samples may hinder the detection of the LH peak.
4、Check if there is an error in how you use the urine. The correct operation should be: Immerse the arrow-marked end of the test strip into the urine for about three seconds, then remove it and place it flat for 10–20 minutes.
Precautions: The sensitivity of ovulation test strips from different brands varies. Although the usage methods are similar, it is recommended to refer to the instructions in detail for better operation. If an ovulation test strip from one brand consistently shows a weak positive, you can consider using test strips from multiple brands together or using an ovulation test instrument in combination. If the weak positive persists, it is advisable to consult a doctor for a more reliable solution.

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