5
Body temperature
Normal body temperature is a range. The following table shows that
ranges of normal also vary by site. Therefore, readings from different
sites, even if taken at the same time, should not be directly compared.
• A person’s normal temperature range tends to decrease with age.
The following table shows normal ThermoScan ranges by age:
The range of normal varies from person to person and can be
influenced by many factors such as time of day, level of activity,
medications and gender.
1. Chamberlain, J.M., Terndrup, T.E., New Light on Ear Thermometer Readings,
Contemporary Pediatrics,
March 1994.
2. Chamberlain, J.M., et al., Determination of Normal Ear Temperature with an Infrared
Emission Detection Thermometer,
Annals of Emergency Medicine,
January 1995.
Normal ranges by site:
Axillary
1
: 94.5 – 99.1 °F 34.7 – 37.3 °C
Oral
1
: 95.9 – 99.5 °F 35.5 – 37.5 °C
Rectal
1
: 97.9 – 100.4 °F 36.6 – 38.0 °C
ThermoScan
2
: 96.4 – 100.4 °F 35.8 – 38.0 °C
Normal ThermoScan ranges by age
2
:
0 – 2 years 97.5 – 100.4 °F 36.4 – 38.0 °C
3 – 10 years 97.0 – 100.0 °F 36.1 – 37.8 °C
11 – 65 years 96.6 – 99.7 °F 35.9 – 37.6 °C
> 65 years 96.4 – 99.5 °F 35.8 – 37.5 °C
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