Quick Answer. The amount of time it takes for a sound wave to reach the brain is a changing value. The distance of the location from where the sound originates and the type of media the sound travels through are direct factors. Keep Learning.
1 The blood tests most frequently used for liver disease are the aminotransferases (alanine aminotransferase or ALT and aspartate aminotransferase or AST). 2  Normal levels of ALT ranges from about 7-56 units/liter, and 10-40units/liters for AST. Many drugs may cause elevated AST, and ALT and some medications can cause severe damage (for example, acetaminophen [ Tylenol liver damage]). 2  Less common causes of abnormal AST and ALT levels are wide ranging (for example, toxins, and autoimmune diseases).
Liver Function Test (LFT) Elevations in Cancer Patients and Users of Tyrosine Kinase Inhibitor (TKI) Drugs. 1  Number of Patients With ALT (Alanine Transaminase) >=3x (Times) Upper Limit of Normal (ULN) [ Time Frame: Study period was October 1, 2004-June 30, 2009. Patients had at least 91 days of follow-up post index date.