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.
MFMA recommends the relative humidity level for a concrete slab for a non-glue-down maple floor system be 85% or lower and for glue down systems the concrete slab relative humidity level should be 75% or lower before installation.
The acceptable range for indoor humidity is between 20 and 60 percent. OSHA set these standards in 1975 in consultation with the American Society of Heating, Refrigerating, and Air-Conditioning Engineers. The Department of Labor provides assistance to help your business comply with federal standards.