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Fecal occult blood is small amounts of blood hidden in the feces, notes Mayo Clinic. Tests for fecal blood are done to see if there is blood loss in the gastrointestinal tract, which stretches from the mouth to the colon... More »

www.reference.com Health Diagnostics & Imaging

Occult blood in stool is impossible to see with the naked eye and requires a fecal occult test that detects hidden blood in feces sample, according to WebMD. Sometimes people can see blood in their stool, however. More »

www.reference.com Health Conditions & Diseases

Fecal occult blood test results determine whether or not a patient has a problem in his digestive system, such as a polyp, growth or cancer in the rectum or colon, according to WebMD. The doctor carries out a fecal occul... More »

www.reference.com Health Diagnostics & Imaging
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In blood testing, MCV stands for "mean corpuscular volume" and MCH stands for "mean corpuscular hemoglobin," notes WebMD. The tests are usually performed as part of a complete blood count, which is a panel of tests that ... More »

www.reference.com Health Diagnostics & Imaging

A PTH intact blood test measures the levels of parathyroid hormone in the blood, notes WebMD. PTH is an acronym for parathyroid hormone, a protein hormone released by the parathyroid gland, indicates MedlinePlus. A PTH i... More »

www.reference.com Health Diagnostics & Imaging

The CPK test measures the amount of creatine phosphokinase in the blood, notes MedlinePlus. Creatine phosphokinase is an enzyme concentrated in the heart, brain and skeletal muscles. High levels of CPK in the blood indic... More »

www.reference.com Health Diagnostics & Imaging

ALT blood levels are checked by undergoing the alanine aminotransferase test to measure the level of the enzyme in the blood, notes WebMD. The enzyme is found mainly in the liver, but it is also available in the pancreas... More »

www.reference.com Health Diagnostics & Imaging