The results of an immunoglobulin E test are either negative or positive. If the results are negative, then the patient has a normal level of the immunoglobulin E antibody. If the results are positive, then the patient ha... More »

Causes of an elevated AST level include liver cancer, cirrhosis of the liver, hepatitis, muscle trauma and mononucleosis, reports MedlinePlus. An increased total immunoglobulin E level is associated with allergic reactio... More »

For adults, elevated levels of immunoglobulin E or IgE are above 423 international units per milliliter of blood, according to WebMD. Normal values of IgE rest between 3 and 423 international units per milliliter of bloo... More »

Lab test results may be positive, negative or inconclusive and are interpreted based on the condition being tested for, claims WebMD. Patients should discuss all test results with their doctor. More »

A positive Purified Protein Derivative, or PPD, test for tuberculosis indicates exposure to the tuberculosis bacterium and potential latent infection, writes MedlinePlus. A positive test manifests as a swelling around th... More » Health Diagnostics & Imaging

An alkaline phosphatase level test with results higher than normal may indicate disease or damage to the liver as a result of hepatitis, cirrhosis, gallstones, liver cancer or a blockage in the bile ducts, states Healthl... More »

The Mayo Clinic website features a chart to help interpret bone density test results. Results of bone density tests are reported by T-scores and Z-scores, according to Mayo Clinic. The chart on the website assists in tel... More » Health Diagnostics & Imaging