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.
Optimum Indoor Relative Humidity Levels - Do You Need a Humidifier? Have you noticed the symptoms of low humidity, such as dry and itchy skin and eyes, sore throats and sinus pain? Before you jump to conclusions and buy a humidifier, itâs best to be sure of whatâs causing the problems. A hygrometer, (humidity meter), will tell you for sure if the humidity is too low. They are not expensive so buy one now and see what it says. Youâll find that humidity levels vary throughout the day. This is normal. Some variation is always to be expected. What you want to avoid is prolonged exposure to low humidity. A relative humidity level between 40% and 50% is generally considered to be the most comfortable. Anywhere from 30% to 60% is acceptable, but ideally you want to avoid the extremes of that range. Too low, and you get the problems mentioned above. Too high can cause problems as well. Keeping humidity below 50% is recommended to help control dust mite populations, for example. For most people, a humidifier will be beneficial during cold weather. The best models have full humidity control where you set the desired level and the machine will turn itself on and off when needed.