Normally, levels of AST in the blood are low. Very high levels of AST (more than 10 times normal) are usually due to acute hepatitis, sometimes due to a viral infection. With acute hepatitis, AST levels usually stay high for about 1-2 months but can take as long as 3-6 months to return to normal.
A Baltimore mechanic named Charles Moncky invented the monkey wrench around 1858. The tool was originally named by using a âpurposeful misspellingâ of its inventorâs name, according to the Ferris State University Jim Crow Museum.
In its modern form, it was invented in 1792 by a parisian  surgeon named Antoine Louis and built by a piano-builder named  Tobias Schmitt. to be true, it was an improvemen â¦ t of an already  existing device.    Contrary to the common belief, Joseph Ignace Guillotin had not  invented the guillotine.