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 air temperature is not greater than 50oF for more than one-half of any 24 hour period. The effect of concrete temperature and retardation of setting time is given by PCA in the chart below. It is concluded from the chart that the retardation effect is more pronounced when a higher concrete temperature is used.