Body temperature readings vary depending on where on the body a person takes the measurements. Rectal readings are higher than oral.
How to take an adult or child temperature using armpit or axillary, mouth or oral, ear or tympanic, and rectal methods, what a normal temperature is, and fever.
This has not been well studied in adult emergency department patients. There are significant differences between rectal temperatures and non-invasive triage.
In most adults, a fever is an oral temperature above 100.4°F (38°C) or a rectal or ear temperature above 101°F (38.3°C). A child has a fever when his or her.
Here are step-by-step instructions on how to take rectal temperature in kids or adults who cannot hold an oral thermometer under the tongue.