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.
What Is the Ideal Humidity Level? With all this talk of improving comfort, lowering energy bills and promoting cleaner indoor air, what humidity level should you aim for? In the summer, home humidity should remain between 30 and 45 percent. Measuring indoor humidity is easy with a hygrometer. This small, handheld instrument displays the relative humidity in the room. You can carry it around with you to different rooms and accurately measure the relative humidity throughout your home. Hygrometers are available at your local hardware store.