How to Take Armpit Temperatures

• Put the tip of the thermometer in an armpit. Make sure the armpit is dry.
• Close the armpit by holding the elbow against the chest for 4 or 5 minutes. The tip of the thermometer must be covered by skin.
• Your child has a fever if the armpit temperature is above 99.0°F (37.2°C). If you have any doubt, take your child's temperature by rectum.