Weather Advisory: Temporary Door Closure

Due to extreme cold, access through the Moakley Building's entrance off Boston Medical Center Place will be temporarily closed from 5 p.m. Friday, Jan. 30, through 7 a.m. Monday, Feb. 2.

All patients and visitors should use the main entrance for the Menino and Yawkey Buildings during this time. The hospital remains open and operating as normal.

We appreciate your patience as we take these precautions during severe winter weather.

The D-xylose absorption test measures uses blood or urine to measure the level of D-xylose in the body. D-xylose is a type of sugar, and the test helps diagnose problems that prevent the small intestine from absorbing nutrients in food.