What type of thermometer is most accurate? Digital oral and rectal thermometers are the most accurate. Rectal thermometers, while they may not be used widely for at-home use, are the better measure of core temperature.
For digital stick thermometers, accuracy is required to ± 0.2°F or 0.1°C (when tested on a water bath), within the range of 98°F and 102.0°F .Feb 12, 2019
Digital thermometers are the most accurate way to measure body temperature . There are many types, including oral, rectal, and forehead, plus many that are multifunctional.
Oral temperature 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.
Ensure there is no air left in the mouth while keeping the thermometer in place. Air in the mouth will cause temperature differences in the mouth tissue, making readings inaccurate . Wait at least 20 seconds even if the thermometer indicates it is already ready. You may also measure twice.
While body temperatures vary, most of us have an internal temperature around 98.6 degrees Fahrenheit. A temperature slightly higher than that is still normal. When your temperature is between 100.4 and 102.2, you have what is considered a low grade fever.
An adult probably has a fever when the temperature is above 99°F to 99.5°F (37.2°C to 37.5°C), depending on the time of day.
Hold the thermometer inside the glass for 30 seconds . In most cases, 30 seconds is plenty of time to get an accurate reading. Electronic thermometers usually beep when they're done, so you don't have to count. If you're using a dial thermometer, it might take 1-2 minutes for an accurate reading.
If you measured your temperature under your armpit, then 99°F or higher indicates a fever . Temperature measured rectally or in the ear is a fever at 100.4°F (38°C) or greater. An oral temperature of 100°F (37.8° C) or more is a fever.Jul 23, 2018
Rectal temperatures are considered most accurate indication of the body's temperature. Oral and axillary temperature readings are about ½° to 1°F (. 3°C to .Mar 23, 2020