What does it mean when an ovulation test strip changes from weakly positive to negative?

Mar 26, 2023 Source: Cainiu Health

Dr. Lv Aiming

Introduction

A positive-to-negative shift in an ovulation test strip may be due to using expired ovulation test strips, contaminated test strips, incorrect usage methods, or a natural decline in hormone levels after ovulation leading to a negative result. It could also occur when a woman does not have normal ovulation, and her hormone levels fail to reach a peak, causing the test to go from weakly positive directly to negative.

　　

　　

　　A shift from weak positive to negative on an ovulation test strip may be caused by improper use of the test, completed ovulation, or lack of ovulation.

　　1. Improper use of ovulation test strips

　　Using expired or contaminated ovulation test strips, or incorrect testing methods, may lead to a direct change from weak positive to negative results.

　　2. Ovulation has already occurred

　　If the ovulation test previously showed a strong positive result and then gradually changed from weak positive to negative, this is a normal phenomenon, indicating that ovulation has been completed. The test turning negative is due to a post-ovulation decline in hormone levels.

　　3. Lack of ovulation

　　If the ovulation test never shows a strong positive result and instead changes directly from weak positive to negative, and if the test was used correctly, it may indicate that the woman did not ovulate normally. In this case, hormone levels did not reach their peak, causing the test to go from weak positive directly to negative.

　　If an ovulation test shifts from weak positive to negative, it is recommended to visit a hospital for ultrasound monitoring of follicular development and ovulation status. Any abnormalities should be treated promptly.

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