Articles

  • Disease

    Paroxysmal cold hemoglobinuria (PCH)

    Blood is comprised of red blood cells, platelets, and various white blood cells.

    Paroxysmal cold hemoglobinuria (PCH) is a rare blood disorder in which the body’s immune system produced that destroy red blood cells when they go from cold to warm temperatures.

  • Disease

    Paroxysmal nocturnal hemoglobinuria (PNH)

    Blood is comprised of red blood cells, platelets, and various white blood cells.

    Paroxysmal nocturnal hemoglobinuria is a rare disease in which red blood cells break down earlier than normal.

  • Test

    Partial thromboplastin time (PTT)

    Partial thromboplastin time (PTT) is a blood test that looks at how long it takes for blood to clot. It can help tell if you have bleeding or clotting problems.

  • Test

    PBG test

    The urinary system is made up of the kidneys, ureters, urethra and bladder.

    Porphobilinogen (PBG) is one of several types of porphyrins found in your body. Normally, your body breaks down porphyrins into heme, an important part of . Porphyrins usually leave your body through urine or stools. If this process is interrupted, porphyrins such as PBG can build up in your ...

  • Disease

    Pernicious anemia

    This picture shows large, dense, oversized, red blood cells (RBCs) that are seen in megaloblastic anemia. Megaloblastic anemia can occur when there is a deficiency of vitamin B-12.

    Pernicious anemia is a decrease in red blood cells that occurs when your intestines cannot properly absorb vitamin B12. See also: Megaloblastic anemia

  • Disease

    Phlegmasia cerulea dolens

    Deep venous thrombosis (DVT) affects mainly the veins in the lower leg and the thigh. It involves the formation of a clot (thrombus) in the larger veins of the area.

    Phlegmasia cerulea dolens is an uncommon, severe form of (blood clots in the vein), usually in the upper leg.

  • Test

    Platelet aggregation test

    The platelet aggregation test checks to see how well , a part of blood, clump together and cause blood clotting.

  • Test

    Platelet associated antibodies

    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.

    A test for platelet-associated antibodies shows whether you have that are directed against platelets in your blood.

  • Test

    Platelet count

    A platelet count is a test to measure how many platelets you have in your blood. Platelets help the blood clot. They are smaller than red or white blood cells.

  • Disease

    Polycythemia vera

    Polycythemia vera is a bone marrow disease that leads to an abnormal increase in the number of blood cells (primarily red blood cells).

  • Disease

    Porphyria

    Porphyria cutanea tarda can be inherited as a dominant trait or acquired due to liver disease.  Sun exposed areas develop blistering (vesicles and bullae), erosions and ulcerations, fragile skin, pigmentary changes, and scarring.

    Porphyrias are a group of rare disorders passed down through families, in which an important part of , called heme, is not made properly. Heme is also found in myoglobin, a protein found in certain muscles.

  • Test

    Porphyrins - blood

    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.

    Porphyrins are a group of chemicals that help form many important substances in the body, including hemoglobin, the protein in red blood cells that carries oxygen in the blood. This article discusses the test to measure the total amount of porphyrins in your blood. See also:

  • Test

    Porphyrins - urine

    The female and male urinary tracts are relatively the same except for the length of the urethra.

    Porphyrins help form many important substances in the body including hemoglobin, the protein in red blood cells that carries oxygen in the blood. Porphyrins can be found in urine. A urine porphyrins test measures the amount of porphyrins in the urine.

  • Disease

    Post-splenectomy syndrome

    The spleen is an organ involved in the production and maintenance of red blood cells, the production of certain circulating white blood cells, as a part of the lymph system, and as a part of the immune system

    Post-splenectomy syndrome is a group of symptoms and signs that often occur after surgery to remove the spleen (). These include: Increased risk of getting severe infections, especially with certain bacteria, such as Streptococcus pneumoniae and Neisseria meningitidis Thrombocytosis (increased , ...

  • Disease

    Primary lymphoma of the brain

    The major areas of the brain have one or more specific functions.

    Primary lymphoma of the brain is cancer of white blood cells that starts in the brain.

  • Disease

    Primary thrombocythemia

    Blood is comprised of red blood cells, platelets, and various white blood cells.

    Primary thrombocythemia is when the bone marrow is making too many platelets without a known cause. Platelets are needed for blood clotting.

  • Test

    Protein C

    Protein C is a substance that prevents blood clotting. A blood test can be done to see how much of this protein you have in your blood.

  • Test

    Protein electrophoresis - serum

    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.

    This test measures the types of protein in the fluid (serum) part of a blood sample. See also:

  • Test

    Protein S

    Protein S is a substance that prevents blood clotting. A blood test can be done to see how much of this protein you have in your blood.

  • Test

    Prothrombin time (PT)

    Prothrombin time (PT) is a blood test that measures the time it takes for the liquid portion (plasma) of your blood to clot. See also:

  • Disease

    Pulmonary embolus

    Air is breathed in through the nasal passageways, travels through the trachea and bronchi to the lungs.

    A pulmonary embolus is a blockage of an artery in the lungs by fat, air, a blood clot, or tumor cells.

  • Disease

    Pulmonary veno-occlusive disease

    Air is breathed in through the nasal passageways, travels through the trachea and bronchi to the lungs.

    Pulmonary veno-occlusive disease is an extremely rare form of high blood pressure in the lung arteries. See also:

  • Test

    Pyruvate kinase

    Pyruvate kinase is an found in red blood cells that helps change sugar in the blood (glucose) to energy when oxygen levels are low. This article discusses the test to measure the level of pyruvate kinase in your blood.