Pruebas
Platelets, also known as thrombocytes, are small blood cells. They form in your bone marrow, the sponge-like tissue in your bones. Platelets are essential for blood clotting . A blood clot is a mass of blood that forms when platelets, proteins, and cells in the blood stick together. When you get hurt, your body forms a blood clot to stop the bleeding.
For everyone & professionals
Pruebas
A pleural fluid analysis is a group of tests that examine a sample of abnormal fluid that builds up in the space between your lungs and chest wall. This space is called the pleural space.
For everyone & professionals
Pruebas
Porphyrin tests measure the level of porphyrins in your blood, urine (pee), or stool (poop). Your body uses porphyrins to make heme. Heme is part of hemoglobin, which is a protein in your red blood cells that carries oxygen from your lungs to the rest of your body.
For everyone & professionals
Pruebas
A potassium blood test measures the amount of potassium in your blood. Potassium is a type of electrolyte . Electrolytes are electrically charged minerals that help control the amount of fluids and the balance of acids and bases (pH balance) in your body. They also help control muscle and nerve activity and perform other important functions.
For everyone & professionals
Pruebas
A prealbumin blood test measures prealbumin levels in your blood. Prealbumin is a protein that's made in your liver and is found in your blood. Prealbumin is used to make other proteins and helps carry thyroid hormones and vitamin A through your bloodstream. It also helps control how your body uses energy.
For everyone & professionals
Artículo
Research record from J Cancer Res Clin Oncol, 2026-04-02. PMID 41927843.
Artículo
Research record from Int J Mol Sci, 2026-10-06. PMID 42884121.
Pruebas
Prenatal cell-free DNA (cfDNA) screening is a blood test given during pregnancy . During pregnancy, some of the fetus's DNA circulates in the mother's bloodstream. A cfDNA screening checks this DNA to find out if the baby is more likely to have certain conditions caused by an abnormal number of chromosomes , such as Down syndrome .
For everyone & professionals
Pruebas
A prenatal panel is a group of blood tests done in early pregnancy . The tests check for diseases and infections that can affect the health of you and your developing baby . The results of the tests can guide treatments, which may help prevent serious complications. A prenatal panel usually includes the following tests:
For everyone & professionals
Pruebas
A progesterone test measures the level of progesterone in a sample of your blood. Progesterone is a hormone that's made mainly by the ovaries, which are two glands in the female reproductive system that contain eggs.
For everyone & professionals
Pruebas
A prolactin (PRL) test measures the level of prolactin in a sample of your blood. Prolactin is a hormone produced by the pituitary gland , a small gland at the base of the brain. Hormones are chemical messengers in your bloodstream that control the actions of certain cells or organs.
For everyone & professionals
Pruebas
Protein C and protein S tests use a sample of your blood to measure how many of these proteins you have and how well they're working. Though they are often done together, these are separate tests. A protein C test measures protein C in your blood ; a protein S test measures protein S.
For everyone & professionals