Medical Health Encyclopedia

Temperature measurement

Armpit -- place the thermometer in the armpit, with the arm pressed against the body for 5 minutes before reading. This is the least accurate method for using a glass thermometer.

Read the thermometer by gripping the end opposite the bulb so that the numbers are facing you. Roll the thermometer back and forth between your fingers until you see a silver or red reflection in the column. Compare the end of the column with the degree marking in the lines on the thermometer.

How to prepare for the test:

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Wait at least 1 hour after vigorous exercise or a hot bath. Wait for 20 to 30 minutes after smoking, eating, or drinking a hot or cold liquid.

How the test will feel:

There is very little discomfort.

Why the test is performed:

The measurement of body temperature determines whether a person has a fever. It may be helpful in monitoring to see if a person is ill or whether a treatment is working -- especially in antibiotic treatment of infections.

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