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A member asked:
Bought answer brand opk used then for more than 30 days even though they say to use within 30 days are they unreliable after 30 days of being open?
A doctor has provided 1 answer
Probably OK: Most products have expiration dates listed that are far in advance of the actual time when they become inactive. On the other hand, if you are trying to become pregnant and time your ovulations, why err on the side of safety?
Answered 3/20/2013
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