Vital Signs  >  Taking a Temperature 

Questions? 

What is the best route for taking a temperature?

The answer to this question depends on the age of the person you care for and whether they have any other problems. Generally speaking, taking a temperature by mouth is the easiest and most common route for adults. A rectal temperature is the most accurate for infants and young children.


I still have a mercury thermometer at home, should I use it?
No. Mercury is a hazardous material that can be toxic when exposed to the skin. Glass thermometers break easily releasing mercury. Contact your local health department to determine how to dispose of a mercury thermometer. Call poison control immediately if you break a glass thermometer.


When a person has a fever, sometimes they are also sick to their stomach. Can I still give them liquids?

Yes, but give them clear liquids like:

  • water
  • clear juices (apple and cranberry)
  • decaffeinated tea or coffee
  • Popsicles and ice chips work well to hydrate a person who is nauseated. Caffeine drinks sometimes add to nausea and will increase the loss of fluids from the body.