Using a thermometer to monitor your temperature can help you manage an illness. A rise in your temperature is usually caused by an illness, infection or injury.

For autologous bone marrow transplant patients, you should check your temperature twice a day for 2 weeks after discharge. For allogeneic bone marrow transplant patients, you should check your temperature twice a day while you are taking immunosuppressive medicines and while you have a central line.

Normal body temperature

Normal body temperature is about 98.6 degrees Fahrenheit (or 37 degrees Celsius). Your temperature often varies from 1 to 2 degrees Fahrenheit (.5 to 1 degrees Celsius) throughout the day. Your temperature is usually low in the morning and gradually increases during the day, reaching its high in the late afternoon or evening.

Electronic thermometers

We recommend that you purchase an oral electronic thermometer. Please follow the manufacturer’s instructions for recommended use.

Conversion Chart – Fahrenheit to Centigrade (Celsius)

  • Fahrenheit: 104.0 = 40.0 Centigrade
  • Fahrenheit: 104.0 = 40.0 Centigrade
  • Fahrenheit: 103.6 = 39.9 Centigrade
  • Fahrenheit: 103.6 = 39.8 Centigrade
  • Fahrenheit: 103.5 = 39.7 Centigrade
  • Fahrenheit: 103.3 = 39.6 Centigrade
  • Fahrenheit: 103.1 = 39.5 Centigrade
  • Fahrenheit: 102.9 = 39.4 Centigrade
  • Fahrenheit: 102.7 = 39.3 Centigrade
  • Fahrenheit: 102.6 = 39.2 Centigrade
  • Fahrenheit: 102.4 = 39.1 Centigrade
  • Fahrenheit: 102.2 = 39.0 Centigrade
  • Fahrenheit: 102.0 = 38.9 Centigrade
  • Fahrenheit: 101.8 = 38.8 Centigrade
  • Fahrenheit: 101.7 = 38.7 Centigrade
  • Fahrenheit: 101.5 = 38.6 Centigrade
  • Fahrenheit: 101.3 = 38.5 Centigrade
  • Fahrenheit: 101.1 = 38.4 Centigrade
  • Fahrenheit: 101.0 = 38.3 Centigrade
  • Fahrenheit: 100.8 = 38.2 Centigrade
  • Fahrenheit: 100.6 = 38.1 Centigrade
  • Fahrenheit: 100.5* = 38.0* Centigrade
  • Fahrenheit: 100.2 = 37.9 Centigrade
  • Fahrenheit: 100.0* = 37.8* Centigrade
  • Fahrenheit: 99.9 = 37.7 Centigrade
  • Fahrenheit: 99.7 = 37.6 Centigrade
  • Fahrenheit: 99.5 = 37.5 Centigrade
  • Fahrenheit: 99.3 = 37.4 Centigrade
  • Fahrenheit: 99.1 = 37.3 Centigrade
  • Fahrenheit: 99.0 = 37.2 Centigrade
  • Fahrenheit: 98.8 = 37.1 Centigrade
  • Fahrenheit: Normal - 98.6 = 37.0 Centigrade

When to call your healthcare provider

*For allogeneic bone marrow transplant patients, page your nurse coordinator if you have a temperature of 100.0 degrees Fahrenheit or higher. For autologous bone marrow transplant patients, page your nurse coordinator if you have a temperature of 100.5 degrees Fahrenheit or higher. This could be a sign of infection and should be treated right away.

If you have a fever and any of these other signs, call your healthcare provider right away:

  • Severe headache
  • Stiff neck
  • Severe swelling of your throat
  • Mental confusion