LAB TEST

Temperature measurement

The measurement of body temperature can help detect illness. It can also monitor whether or not treatment is working. A high temperature is a fever .

How the Test is Performed

The American Academy of Pediatrics (AAP) recommends not to use glass thermometers with mercury. The glass can break, and mercury is a poison. Electronic thermometers are most often suggested. An easy-to-read panel shows the temperature. The probe can be placed in the mouth, rectum, or armpit. Mouth: Place the probe…

How to Prepare for the Test

Always clean the thermometer before and after using. You can use cool, soapy water or rubbing alcohol. Wait at least 1 hour after heavy exercise or a hot bath before measuring body temperature. Wait for 20 to 30 minutes after smoking, eating, or drinking a hot or cold liquid.

Normal Results

The average normal body temperature is 98.6°F (37°C). The normal temperature can vary due to things such as: Age (in children over 6 months, daily temperature can vary by 1 to 2 degrees Fahrenheit) Differences among individuals Time of day (often highest in the evening) Which type of measurement was taken (oral,…

What Abnormal Results Mean

If the reading on the thermometer is more than 1 to 1.5 degrees Fahrenheit above your normal temperature, you have a fever . Fevers may be a sign of: Blood clots Cancer Certain types of arthritis, such as rheumatoid arthritis or lupus Diseases in the intestines, such as Crohn disease or ulcerative colitis Infection…

References

McGrath JL, Bachmann DJ. Vital signs measurement. In: Roberts JR, Custalow CB, Thomsen TW, eds. Roberts and Hedges' Clinical Procedures in Emergency Medicine and Acute Care. 7th ed. Philadelphia, PA: Elsevier; 2019:chap 1. Sajadi MM, Romanovsky AA. Temperature regulation and the pathogenesis of fever. In: Bennett JE,…

This is a summary. Read the full article at www.ucsfbenioffchildrens.org (reviewed 08/02/2024).

This page is general information and is not medical advice. It does not replace a registered doctor, and it is not a prescription or a recommendation to use any medicine or test. Prices are listed prices and may change. Always follow the advice of your doctor or pharmacist.