3. Information about this thermometer
The temperature measurement varies depending on the part of the body where the mea-
surement is taken. In a healthy person, the variance can be between 0.4 °F and 1.8 °F (0.2 °C
and 1 °C) in diff erent parts of the body.
The result of FT 90 is shown as oral temperature.
Beurer tip
• Temperatures measured with diff erent thermometers should never be compared
with one another.
• Tell your doctor what type of thermometer you used to take your temperature
and on what part of the body. Also bear this in mind if you are diagnosing your-
self.
Holding the thermometer for too long in the hand before taking a measurement can
cause the device to warm up. This means the measurement could be incorrect.
Infl uences on body temperature
• A person's individual metabolism
• Age
Body temperature is higher in babies and toddlers than in adults. Greater temperature
fl uctuations occur faster and more often in children. Normal body temperature decreases
with age.
• Clothing
• Outside temperature
• Time of day
Body temperature is lower in the morning and increases throughout the day towards eve-
ning.
• Activities
Physical and, to a lesser extent, mental activities increase body temperature.
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