304 results found
Medical tests
… A bilirubin test measures the amount of bilirubin in a blood sample. Bilirubin is a brownish yellow substance found … direct bilirubin measurements. When bilirubin levels are high, the skin and whites of the eyes may look yellow … So some babies who develop jaundice may need treatment to lower their bilirubin levels. Why It Is Done The bilirubin …
Medical tests
… waste product creatinine (say "kree-AT-uh-neen") in your blood and urine. These tests tell how well your kidneys are … creatinine level shows how well your kidneys are working. A high level may mean that your kidneys aren't working as they … tract . Low values Low blood creatinine levels can mean lower muscle mass caused by a disease, such as muscular …
Medical tests
… sodium and potassium levels in the body. This helps control blood pressure and the balance of fluids and electrolytes in the … stimulates the adrenal glands to release aldosterone. High levels of both renin and aldosterone are normally …
Medical tests
… measures the amount of the amino acid homocysteine in the blood. Why It Is Done A homocysteine blood test is done to: … a vein. You may get a small bruise at the site. You can lower the chance of bruising by keeping pressure on the site … with you in relation to your symptoms and past health. High values High values of homocysteine may be caused by: …
Medical tests
… rate, muscle strength, and mental alertness. They also lower the amount of blood that goes to the skin and … glands to release too many hormones. And that can cause high blood pressure, excessive sweating, headaches, fast heartbeats, and tremors. How To …
Medical tests
… Test Overview A reticulocyte count is a blood test that measures how fast red blood cells called … prematurely, such as hemolytic anemia . Also, being at high altitudes may cause reticulocyte counts to rise, to help you adjust to the lower oxygen levels at high altitudes. Why It Is Done A …
Medical tests
… strenuous exercise for at least 8 hours before your first blood sample is taken. (You can drink water before the … Symptoms of low blood glucose include weakness, hunger, sweating, and feeling nervous or restless. If you develop … that isn't in the normal range may still be normal for you. High values High glucose levels may be caused by: Diabetes. …
Medical tests
… results are reported as a lung clearance index (LCI). A high LCI value means that the lungs aren't working well. Why … or discomfort, tell the therapist right away. Risks For a healthy person, there's little or no risk in taking these … with force after you inhale as deeply as you can. Normal or lower than predicted value Forced expiratory volume (FEV1) …
Medical tests
… only a very low level) is generally found in the blood of healthy men or healthy, non-pregnant women. The level of AFP … , ovaries , stomach, pancreas , or liver—are present. High levels of AFP may also be found in Hodgkin disease , … women than they are for white women. Values are slightly lower for Asian women than they are for white women. An …
Medical tests
… diabetes, kidney stones, a urinary tract infection (UTI), high blood pressure, or some kidney or liver diseases. As … enough fluid, loss of too much fluid (excessive vomiting, sweating, or diarrhea), or substances (such as sugar or … types of poisoning, and some types of kidney diseases. Healthy pregnant women can have glucose in their urine, …
