Dec 24, 2025 · Checking your blood pressure helps you avoid health problems. Learn more about what your numbers mean.

Jan 29, 2025 · Ejection fraction is a measurement of the percentage of blood leaving the heart each time it squeezes. When the heart squeezes, it's called a contraction. Ejection fraction is …

Apr 22, 2023 · Learn about how to track your menstrual cycles and what any changes may mean.

Overview A hematocrit (he-MAT-uh-krit) test measures the proportion of red blood cells in the blood. Red blood cells carry oxygen throughout the body. Having too few or too many of them …

Mar 29, 2024 · The news is full of reports about cancer risk, but what does it all mean for you? Find out how to interpret cancer statistics.

Symptoms The main symptom of atrial tachycardia is a very fast heartbeat. Typically during atrial tachycardia, the heart beats 150 to 200 times a minute. The fast heartbeat may come and go …

Nov 11, 2023 · This test indicates your average blood sugar level for the past 2 to 3 months. In general: Below 5.7% is normal Between 5.7% and 6.4% is diagnosed as prediabetes 6.5% or …

Feb 22, 2025 · An A1C test result shows the average blood sugar level over the past 2 to 3 months. The A1C test measures what percentage of hemoglobin in the blood is coated with …

Jan 14, 2023 · Overview A complete blood count (CBC) is a blood test. It's used to look at overall health and find a wide range of conditions, including anemia, infection and leukemia. A …

Dec 24, 2025 · Symptoms Body temperatures vary slightly from person to person and at different times of day. The average temperature has traditionally been defined as 98.6 F (37 C). A …