Forehead Thermometer Giving Different Temperature Readings

Forehead Thermometer Giving Different Temperature Readings

The temporal thermometer is considered to be the most accurate method of measuring body temperature, proving to be more accurate than infrared scanning thermometers. But like any instrument, there are certain circumstances that can cause different temperature readings in forehead thermometers.

Why might you get two different readings using a temporal scanning thermometer? Keep reading to learn the reasons why you may be getting different readings.

Instances of Different Temperatures

When using a temporal artery thermometer, you should normally be getting reproducible results. These results should be within a few tenths of a degree of each other. However, there are a few instances that can cause inaccuracies.

Here’s what to know about using the temporal artery temperature method:

  • Multiple temperatures taken over the same area in rapid succession will ultimately cool the area, causing differences in temperature readings.
  • Any head covering, hair, hat, etc., will prevent the heat from dissipating and would cause the reading to be inaccurately high. This also applies if one side of the head is into a pillow.
  • If the person is sweating, the temperature on the neck behind the ear lobe becomes the overriding temperature. Since this area is not quite as stable as the temporal artery, it can easily be cooled by the thermometer in taking multiple readings. It's important to keep in mind that the probe of the thermometer will be at room temperature, which is about 30 degrees Fahrenheit (17 degrees Celsius) cooler than body temperature.

Temporal artery temperature is the most accurate method of temperature assessment in the world. To ensure accuracy with temporal thermometers, be sure to scan the side of the head that is most exposed when taking your temperature measure. This will likely address your issues of getting different temperature readings.

In Closing: Different Temperature Readings 

If you’re getting different readings with your Exergen thermometer, make sure one of the instances mentioned above is not occurring first.
You can read our troubleshooting user guide for more information on potential issues or Exergen Thermometer. You can also read more about how temporal thermometers work, including the technology behind Exergen instruments.