Will Rectal Thermometer Work Orally?

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 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 (.

How can you tell the difference between an oral and rectal thermometer?

The oral thermometer has a longer thinner tip. The shape of the rectum thermometer is made blunt, short and with a rounded tip to avoid injury. The stem of the oral thermometer is in the color blue. The stem of the rectal thermometer is colored in red to avoid confusion.