A high RDW blood test result may indicate anemia due to either iron deficiency or a deficiency of folate and vitamin B12, according to Wikipedia. It may also be a result of a recent hemorrhage. False high RDW readings sometimes occur when the wrong type of blood is used for the test. As MedFriendly explains, other causes for a high RDW test result include liver disease and hemolytic anemia.Know More
An RDW test is a test of red cell distribution width, and it measures the variation in the size of red blood cells. According to MedFriendly, this test is often done in conjunction with measuring the mean corpuscular volume, or MCV, of the red blood cells. The MCV is the average amount of space that each cell takes up within the bloodstream.
A comparison of the RDW and MCV measurements helps to determine what type of anemia a person is experiencing. When anemia is present and RDW and MCV are both high, anemia is typically due to folate and vitamin B12 deficiency. As Health Research Funding explains, red blood cells increase in size due to B12 and folate deficiency, raising the MCV. When RDW levels are high but MCV levels are not, the cause is more likely iron-deficiency anemia. In iron-deficiency anemia, a lack of iron in the blood causes a decrease in hemoglobin, which is the substance in red blood cells that carries oxygen.Learn more about Diagnostics & Imaging
A 39 on the AST blood test is slightly above the normal range of 10 to 34 international units per liter, notes MedlinePlus. AST, the abbreviation for aspartate aminotransferase, is an enzyme found in the heart, liver and other body tissues.Full Answer >
In a blood test, a decreased mean corpuscular hemoglobin, MCH, and elevated red cell distribution width, or RDW, value means a low red blood cell count, which indicates anemia, states WebMD. Normal adult MCH and RDW values are 28 to 34 picograms per cell and 11.5 to 14.5 percent respectively.Full Answer >
A positive result on an ANA, or antinuclear antibodies, test should be interpreted light of the patient's medical history, states the American College of Rheumatology. In addition, more testing information must be added to the interpretation to determine if antibodies are being produced to attack foreign bodies.Full Answer >
When reading laboratory results, take note of the test performed, the test result and the normal reference ranges. All lab reports contain certain items as required by law, according to the American Association for Clinical Chemistry.Full Answer >