A member asked:

Can i use fever thermometer instead of bbt for ovulation chart?how much does fever thermometer & bbt range before and after ovulation?

3 doctors weighed in across 2 answers
Dr. Dale Kristle answered

Specializes in Gynecology

No: although both will give the same result, a BBT thermometer allows smaller changes in temperature to be noted as is needed. I think most ob/gyns and infertility specialists have abandoned BBT testing, using only ovulation predictors kits.

Answered 10/3/2014

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Digital thermometer: Any digital thermometer should be fine provided it is calibrated to 1/10 of a degree.

Answered 5/5/2015

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