Fever strips or thermometer phone apps aren’t accurate, so don’t rely on them for taking someone’s temperature. Do not use a glass mercury thermometer. These are fragile and mercury is a toxic substance. Some places have banned these devices because of safety concerns. [3] X Trustworthy Source United States Environmental Protection Agency Independent U. S. government agency responsible for promoting safe environmental practices Go to source
If you’re taking a child’s temperature, also wait 20 minutes after they’ve been wrapped in a blanket to get an accurate reading.
If the person doesn’t want to remove their shirt entirely, they can just pull their arm out of one sleeve so you can access the armpit.
This button may also be labeled “Power” or “Reset. " Different models may work differently. Always check the instruction manual of your thermometer to find out exactly how to work it.
Don’t push down so hard that you hurt the person. If they seem uncomfortable, ask if you’re pressing too hard.
Start over again if the thermometer slips or comes out of place. Hit the reset or start button to clear the thermometer, then put it back into place. If you’re taking a child’s temperature, do not leave them unattended while the thermometer works. They may move or take the thermometer out, and you’ll have to take the temperature again.
Some thermometers may not beep when the reading is complete. Instead, the reading may just flash to indicate it’s finished. Keep an eye on the thermometer display if yours doesn’t beep.
If you took a child’s temperature, contact your doctor to see if they should come in for a checkup. Doctors recommend checking the person’s temperature again with a more accurate test like an oral thermometer if the armpit reading indicates a fever.
