How to best use different types of thermometers

A digital ear thermometer uses an infrared ray to measure the temperature inside the ear canal.

Turn on the digital thermometer. Gently place it in your ear canal no further than indicated by the instructions that came with the device.

Hold the thermometer tightly in place until you hear the thermometer beep indicating it’s done.

Remove the thermometer and read the number.

Temporal artery thermometers use an infrared scanner to measure the temperature of the temporal artery in your forehead.

Turn on the digital thermometer.

Gently sweep it across your forehead and read the number.

You’ll need an oral thermometer, used in the mouth.

If you’ve been eating or drinking, wait 30 minutes before you take a temperature by mouth.

Turn on the digital thermometer. Place the thermometer tip under your tongue.

Close your mouth around the thermometer for the recommended amount of time or until the thermometer beep indicates it’s done.

Remove the thermometer and read the number.

A digital thermometer can be used in your armpit, if necessary. But armpit temperatures are typically less accurate than oral temperatures.

Turn on the digital thermometer. Place the thermometer under your armpit, making sure it touches skin, not clothing.

Hold the thermometer tightly in place until you hear the thermometer beep indicating it’s done.

Remove the thermometer and read the number.