blood test

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blood test,

examination of bloodblood,
fluid pumped by the heart that circulates throughout the body via the arteries, veins, and capillaries (see circulatory system; heart). An adult male of average size normally has about 6 quarts (5.6 liters) of blood.
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 routinely or as an aid in diagnosing a suspected disease. Tests may be performed on whole blood or on the plasma portion only. Blood typing identifies the proteins at specific sites on red blood cells, a necessity in determining compatibility for blood transfusionblood transfusion,
transfer of blood from one person to another, or from one animal to another of the same species. Transfusions are performed to replace a substantial loss of blood and as supportive treatment in certain diseases and blood disorders.
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. Human Lymphocyte Antigens (HLA) is a form of white blood cell typing prerequisite for organ and bone marrow transplants. The Coulter Cell Counter is widely used in electronic counts of red blood cells for the diagnosis of anemiaanemia
, condition in which the concentration of hemoglobin in the circulating blood is below normal. Such a condition is caused by a deficient number of erythrocytes (red blood cells), an abnormally low level of hemoglobin in the individual cells, or both these conditions
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 and polycythemiapolycythemia
, condition characterized by an increase in the production of red blood cells, or erythrocytes, in the blood. Primary polycythemia, also called erythremia, or polycythemia vera, is a chronic, progressive disease, most common in middle-aged men.
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. White cell counts are vital in detecting infections or in confirming leukemialeukemia
, cancerous disorder of the blood-forming tissues (bone marrow, lymphatics, liver, spleen) characterized by excessive production of immature or mature leukocytes (white blood cells; see blood) and consequently a crowding-out of red blood cells and platelets.
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. Serum or plasma may be collected, cultured, and inoculated with bacteria or other substances for the purpose of detecting the body's reaction to infections, cancer, or HIV, the virus that causes AIDSAIDS
or acquired immunodeficiency syndrome,
fatal disease caused by a rapidly mutating retrovirus that attacks the immune system and leaves the victim vulnerable to infections, malignancies, and neurological disorders. It was first recognized as a disease in 1981.
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. Plasma may also be examined for evidence of functional disorders, e.g., for blood sugar in testing for diabetes mellitus. Blood tests for tumor markers, such as prostate-specific antigen, are effective in detecting cancer in high risk groups. Almost all blood tests are now performed by electronic equipment, and results are evaluated and printed out by computer.

blood test

[′bləd ‚test]
(pathology)
A serologic test for syphilis.
A blood count.
A test for detection of blood, usually one based on the peroxidase activity of blood, such as the benzidine test or guaiac test.
References in periodicals archive ?
Bloodwork demonstrated a leukocytosis of 23,400 cell/[micro]L with new mildly elevated AST and ALT 196 u/L and 431 u/L, respectively.
Bloodwork results were not significantly different between the groups.
But even after Theranos requested an extension, CMS found that the company had failed to fix the problems regulators cited and that the lab's claims of compliance were "not credible." As a result, regulators proposed to revoke the lab's licenses, starting 60 days after a notice of imposition, and to limit the lab's license to do bloodwork eight days after the notice.
The initial bloodwork showed slightly enhanced amylase = 174 U/L (N = 25-100 U/L) and lipase = 97U/L (N = 0-60 U/L).
After chemotherapy is completed, all leukemia patients must be closely monitored through bloodwork for pancytopenia, and blood or blood product transfusion may be needed during the patient's nadir, or peak effect of chemotherapy on bone marrow production.
However, the urgent kidney surgery required was delayed for two weeks by the hospital administration due to medical tests such as an ultrasound, X-rays and bloodwork. These tests can be conducted within a few hours, but the surgery was then delayed for an additional fortnight on the grounds that the hospital room allocated for inmates would undergo repairs that would not be completed for up to two months.
"In addition to recommending an amino acid called L-tryptophan, which improves sleep and mood, I sent her for extensive bloodwork, and sure enough, her thyroid was off.
Qualifying clients can utilize Voya's Orange Pass capability, with the potential for some policies to be issued in as little as five business days without bloodwork or a medical exam.
Repeat bloodwork showed a hemoglobin concentration of 72 g/L and a hematocrit of 18.1%.
I might help with spinning tubes of blood or urine, testing and sending out bloodwork, or making and viewing slides under the microscope.
* If you are diagnosed with Afib, consider referral to a cardiologist to discuss the underlying causes of the condition and obtain some baseline bloodwork to rule out underlying thyroid disease, and have an echocardiogram to determine if there's valvular disease or heart failure.