Find answers to your health-related questions in our health encyclopedia.

  • Disease

    Q fever

    A thermometer is a useful aid used to measure body temperature. A thermometer is usually filled with mercury.  Mercury in the tube rises when expanded by an increase in body temperature.

    Q fever is a bacterial infection that can affect the lungs, liver, heart, and other parts of the body.

  • Disease

    Q fever - early

    Q fever is an infectious disease that is spread by domestic and wild animals and ticks.

  • Test

    Quadruple screen test

    Quadruple screen

    The quadruple screen test is a blood test done during pregnancy to determine whether the baby is at risk for certain birth defects.

  • Test

    Quantitative nephelometry

    Blood is drawn from a vein (venipuncture), usually from the inside of the elbow or the back of the hand. A needle is inserted into the vein, and the blood is collected in an air-tight vial or a syringe. Preparation may vary depending on the specific test.

    Quantitative nephelometry is a test to quickly and accurately measure the specific level of certain proteins called immunoglobulins in your blood....

  • Questions To Ask Your Doctor

    Questions to ask your child's doctor

  • Questions To Ask Your Doctor

    Questions to ask your doctor after knee replacement

    You had surgery to get a new knee joint. Below are questions you may want to ask your health care provider to help you take care of your new joint.

  • Questions To Ask Your Doctor

    Questions to ask your doctor before knee replacement

    How do I know if knee replacement surgery will help me? Is there any harm in waiting? Am I too young or too old for knee replacement? What else can be...