If you take multiple medications, consult the Drug Checker to be sure they're not interacting with each other. This assessment will get you started toward a healthier lifestyle. New digital electronic ones are accurate. Where to Take the Temperature Temperatures measured rectally are the most accurate. Temperatures measured orally, by electronic pacifier, or by ear canal are also accurate if done properly.
Temperatures measured in the armpit are the least accurate, but they are better than no measurement.
The reason you need to take a rectal temperature for young infants is that if they have a true fever, they need to be evaluated immediately. An ear thermometer can be used after 6 months old. How to Take Rectal Temperatures Have your child lie stomach down on your lap. Put some petroleum jelly on the end of the thermometer and on the opening of the anus. Slide the thermometer gently into the opening of the anus for about 1-inch.