
Creatinine test - Mayo Clinic
Jun 12, 2025 · Overview A creatinine test is a measure of how well the kidneys are doing their job of filtering waste from the blood. Creatinine is a chemical compound left over from energy …
Ejection fraction: An important heart test - Mayo Clinic
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 …
Hyponatremia - Symptoms and causes - Mayo Clinic
Jul 18, 2025 · Hyponatremia is the term used when your blood sodium is too low. Learn about symptoms, causes and treatment of this potentially dangerous condition.
Blood pressure chart: What your reading means - Mayo Clinic
Feb 28, 2024 · Ideal blood pressure is categorized as normal. Increased blood pressure may be categorized as elevated, stage 1 or stage 2 depending on the specific numbers. A diagnosis of …
Heart rate: What's normal? - Mayo Clinic
Oct 22, 2025 · A normal resting heart rate for adults ranges from 60 to 100 beats per minute. A heart rate above or below that may signal a health condition.
Aging: What to expect - Mayo Clinic
Nov 1, 2024 · Aging: What to expect Wonder what's considered a natural part of the aging process? Here's what to expect as you get older — and what you can do about it. By Mayo …
Hematocrit test - Mayo Clinic
Results Results from your hematocrit test are reported as the percentage of blood cells that are red blood cells. Typical ranges vary substantially with race, age and sex. The definition of …
Ferritin test - Mayo Clinic
Dec 19, 2023 · Overview A ferritin test measures the amount of ferritin in the blood. Ferritin is a blood protein that contains iron. This test can be used to find out how much iron the body …
Mental health: Know when to get help - Mayo Clinic
Mental health is the overall wellness of how you think, behave and manage your feelings. A mental health condition may be present when patterns or changes in thinking, feeling, or …
Presión arterial baja (hipotensión) - Síntomas y causas - Mayo Clinic
Nov 7, 2024 · Aunque lo que se considera presión arterial baja para una persona puede estar bien para otra. La presión arterial baja puede no causar síntomas perceptibles. O puede …