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.
When installing new wood flooring, it is best if it has an Equilibrium Moisture Content (EMC) from 6 to 9 percent; this equates to 70 Â°F (21 Â°C) at 30 to 50 percent relative humidity. Make sure you measure the moisture content of the flooring with a moisture meter when it arrives at the site.