What is a Basal Body Thermometer?

A basal body thermometer measures the body's basal temperature, which is the body's resting temperature. Since shifts in the basal body temperature are usually less than 1 degree F, the basal body thermometer is a hypersensitive device. Basal body thermometers are primarily used to chart decreases in the basal body temperature, which indicates ovulation in women. Determining periods of fertility with these devices can help a woman become pregnant.

Function

The basal body thermometer is used to measure the body's basal temperature, or resting temperature, to an accuracy of a tenth of degree Fahrenheit.

Types

Glass fever thermometers and digital thermometers are the two main types of basal body thermometers. Some digital thermometers have built-in memory, which records basal body temperatures for a period of time.

Use

The basal body thermometer can be inserted through the mouth, vagina or anus. It should be used immediately upon waking to accurately measure the body's resting temperature.

Benefits

By using a basal body thermometer, a woman can track changes in her temperature and determine when she is ovulating. This can help her conceive successfully.

Cost

Basal body thermometers generally range from about $5 to $20, depending on the type and its features. Specialty basal body thermometers for fertility tracking can cost about $100.

Resources

• Tips and Information on Basal Body Thermometer Usage