how long does a positive opk last??

Question

opk last??" /> I ordered some opk'S online and they arrived midway though my cycle. so I took my 1st test the day I got them and it was a slight positive. I continued to take the opks for about 7days after in which they became clear negatives.  but im curious to know..if I got a slight positive on cd18 then negatives...how many days b4 would it have been a TRUE positive??

Answer

this was taken at cd18...so would u say its a true positive or a day old?!?!

Answer

I used this until I was sure that I was reading them correctly :)

Answer

12-36 hours, so about 2 and 1/2 days.

how long does a positive opk last??

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