There are several ways to use a thermometer depending on the type of thermometer and the method you are using to measure temperature. Here is a summary of how to use various types of thermometers:
Infrared Thermometer (Forehead)
- Press the power button to turn it on and wait 15 minutes for warm-up.
- Set to Celsius and body reading mode if applicable.
- Stand slightly to the side of the person, not directly in front.
- Have the person remove hair, hats, or glasses and wipe off sweat.
- Point the thermometer at the end of the right eyebrow about 3-5 cm away without touching the skin.
- Read the temperature on the screen.
Digital Oral Thermometer
- Clean the thermometer with rubbing alcohol or soap and water before use.
- Place the thermometer tip under the tongue.
- Close the mouth and hold the thermometer for about 40 seconds until it beeps.
- Read the temperature on the display.
Rectal Thermometer (for babies and young children)
- Use a lubricant on the tip.
- Insert the tip gently into the rectum about ½ to 1 inch depending on the age.
- Hold steady until it beeps (about 30 seconds).
- Clean the thermometer thoroughly after use.
Axillary (Armpit) Thermometer
- Make sure the armpit is dry.
- Place the thermometer tip centered under the armpit.
- Hold the arm tightly against the body.
- Wait until it beeps (can take over 30 seconds).
- Read the temperature.
Ear Thermometer
- Insert a protective cover on the thermometer tip.
- Gently insert into the ear canal until it is snug.
- Hold until it beeps.
- Dispose of the cover and read the temperature.
General Precautions
- Always clean thermometers before and after use.
- Do not use the same thermometer for oral and rectal measurements.
- Wait 30 minutes to 6 hours after eating, drinking, or taking fever-lowering medications before measurement depending on the method.
- If temperature is above 38°C (100.4°F), it indicates a fever.
This general guide covers how to use the most common types of thermometers and methods to obtain an accurate body temperature reading.
