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We link primary sources - including studies, scientific references, and statistics - within each article and also list them in the resources section at the bottom of our articles. Medical News Today has strict sourcing guidelines and draws only from peer-reviewed studies, academic research institutions, and medical journals and associations. The Environmental Protection Agency (EPA) notes that there is a ban on the retail sale of mercury thermometers in at least 13 states. People should avoid using glass mercury thermometers as they can be dangerous. Although these strips are painless and disposable, the readings they provide are often inaccurate. Liquid crystal forehead temperature strips: These contain tiny liquid crystals and chemical compounds that change color as they react to the temperature of the skin.Temporal artery thermometers: Forehead thermometers, or temporal artery thermometers, use an infrared scanner to measure the temperature of the temporal artery under the skin of a person’s forehead.Healthcare professionals often use basal body temperature as a way to predict fertility or as a supplemental method of birth control. Basal thermometers: These are digital thermometers that measure basal body temperature, which is the temperature of the body at rest.Axillary means that a person takes a temperature under the arm.
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Electronic digital thermometers: These measure oral, axillary, and rectal temperatures.The most common methods of temperature assessment include:
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