Blood Tests Directory
Blood tests are laboratory tests that analyze various parts of your blood. The blood is usually extracted from a vein or from a finger tip via a finger prick. The blood tests can analyze physiological and chemical balances in the body and can determine types of diseases a person may have, how effective drugs are and organ function.
Understanding Lab Test Results-Overview
Lab tests play one role in your health care. But while it is an important role, in most cases lab tests don't provide all the information your health professional needs to make a diagnosis or treatment decisions.Unless the answer is mostly black and white-either you are pregnant or you're not-your health professional will rarely make a decision or diagnosis based only on the results of a lab ...
Understanding Lab Test Results-Results
Some lab tests can give you specific information. For example, your health professional may suspect you have strep throat and order a throat culture to verify the presence of streptococcus bacteria. A positive lab test confirms the diagnosis and helps your health professional determine what type of treatment is right for you. Other tests provide only a general clue that must be considered with ...
Understanding Lab Test Results-Why It Is Done
Lab tests are generally done for one of the following reasons: To find the cause of symptomsTo help establish a diagnosisTo screen for disease or risk for disease. Screening tests are often done for specific age or other groups.To help rule out a disease or conditionTo gauge the severity of a diseaseTo monitor the progression of disease, organ function, or response to treatmentTo verify specific .
The Prostate-Specific Antigen (PSA) Blood Test
WebMD tells you about the prostate specific antigen (PSA) test that is used to help detect prostate cancer or other prostate abnormalities.