HPT After an hCG Trigger Shot

Can I Use an OPK Instead of an HPT to Test Out?

When doing your research, you might have come across articles about women using an ovulation predictor kit (OPK) instead of an HPT. Does this really work? The answer: Maybe.
OPKs are used to detect the LH surge before ovulation. In theory, they can be used to test out the trigger shot because LH and hCG are structurally similar. Because of this, the OPK could read the hCG and give a positive result. Since OPKs are designed to detect the LH surge, they are designed to recognize a higher concentration of LH, which could limit their ability to read small amounts of hCG.
Another thing to keep in mind is that you have a little bit of LH in your system at all times. This test may still have a faint line but it could be reading your natural LH level instead of the hCG level, making it not as helpful when testing out the trigger shot.

In the End…

No matter how you look at it, there will be some waiting time after getting the trigger shot. By testing out the shot or trying the blood test, the waiting time can be made a little shorter or at least a little less stressful. 
Some women will do better just relaxing and trying to distract themselves until their scheduled blood tests. However, many women want to take a more hands-on approach and just cannot help trying home pregnancy tests after an hCG trigger shot. Having a basic understanding of how the hCG trigger can affect home pregnancy tests is vital to avoiding disappointment and misinterpretation. 
Last reviewed by: Arthur Schoenstadt, MD
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