Yes but it only shows up on mouth thermometers
Putting a penny under your tongue while taking your temperature with a thermometer can alter the temperature reading. The metal of the penny may interfere with the accuracy of the thermometer, leading to an incorrect reading. It is always best to follow the manufacturer's instructions for proper use of the thermometer.
Do the old penny trick. put a penny under your tongue ang suck on it for about and hour or so then take your temp that should do it!
oral temperature oral temperature
Taking your temperature under the arm (axillary) is generally lower than taking it under the tongue (oral). The oral temperature is usually considered more accurate and reliable, as it reflects the core body temperature more closely. Typically, the difference can range from about 0.5°F to 1°F (0.3°C to 0.6°C), with the oral temperature being higher. Therefore, if you measure your temperature under the arm, it is expected to be lower than the reading from under the tongue.
Measuring body temperature by keeping thermometer under the tongue is a convenient standardfor measuring one's body temperature. Other places used for keeping the thermometer includethe armpit and the rectum.
Measuring body temperature by keeping thermometer under the tongue is a convenient standardfor measuring one's body temperature. Other places used for keeping the thermometer includethe armpit and the rectum.
No air flow & close to core temperature.
A thermometer is kept under the tongue to measure the body's core temperature accurately. The blood vessels under the tongue provide a good reflection of internal body temperature, making it a reliable location for temperature measurement. The mouth is also a convenient and non-invasive site for taking temperature readings.
There are a net of blood vessels close to the surface under the tongue and this gives a true reading of the temperature of the blood (and hence the body).
Put a thermometer under your tongue and close your mouth tightly.
under the tongue, armpit, rectum, ear(with a tempanic thermometer)
You should place the thermometer under your tongue for an accurate oral temperature reading.