Can You Use a Rectal Thermometer Orally?

Rectal method (in the rectum or bum)
After a thermometer has been used to take a rectal temperature, do not use it to take an oral temperature. Make sure that the rectal thermometer is clearly marked so that it is not used orally.

Is there a difference between rectal and oral thermometer?

There is a 1 degree difference in the ideal oral and rectal temperatures. Rectal temperature should be around 99.6 degrees. Oral temperature should be about a degree cooler--98.6 degrees. ... One other difference between rectal and oral thermometers is the location of the line or indicator showing “normal” temperature.

Is a rectal thermometer accurate orally?

Yes, for the most accuracy. Rectal temperatures are considered most accurate indication of the body's temperature. Oral and axillary temperature readings are about ½° to 1°F (.

Maya Lin-Takahashi

Maya Lin-Takahashi

Consumer Tech & Gadget Reviewer

Maya is a hardware enthusiast who tests and reviews smart home devices, smartphones, wearables, and audio gear. She focuses on practical consumer value and build quality.