6
IMPORTANT NOTES
• This thermometer is calibrated and ready to use.
• The reliability of the reading cannot be guaranteed if the
body temperature is measured over any part of the body
that is not the forehead temporal region.
• Body temperature increases by 0.5°C between 6:00 AM
and 3:00 PM.
• Women have a temperature that is higher, on average, by
around 0.2°C. Their temperature also varies in accordance
with their ovarian cycle. It rises by 0.5°C in the second half
of the cycle and at the early stages of pregnancy.
• When sitting, body temperature is lower by about 0.3°C
to 0.4°C then when standing.
Age Range Normal body Fever High Fever Application
Temperature Used
24 - 36 months* 35.9°C - 38.0°C 38.1°C - 39.0°C > 39.0°C Rectal
(96.6°F - 100.5°F) (100.6°F - 102.2°F) (> 102.2°F)
> 3 years* 35.4°C - 37.7°C 37.8°C - 39.4°C ≥ 39.5°C Rectal
(95.7°F - 99.9°F) (100.0°F - 103.0°F) (≥ 103.1°F)
11 - 65 years** 35.9°C - 37.6°C ≥ 37.7°C Rectal
(96.6°F - 99.7°F) (≥ 99.8°F)
> 65 years** 35.8°C - 37.5°C ≥ 37.6°C Rectal
(96.4°F - 99.5°F) (≥ 99.6°F)
*Herzog L, Phillips S. Addressing Concerns About Fever.
Clinical Pediatrics. 2011; 50(#5) 383-390.
** Private eld study, for information purposes only.
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