The patient is fasted overnight.
· 8.00am: Empty the bladder and discard the urine specimen. Give the patient an oral dose of 5g
d(+)-Xylose in a glass of water. For the 5-hour test period, allow the patient to drink water but no
solid food intake. All urine passed between 8.00a.m. are put into Bottle 1.

· 10.00 am: The bladder is emptied and the specimen is put into Bottle 1 which is now complete. All
urine passed between 10.00 am. and 1.00 p.m. are into Bottle 2.
· 1.00p.m.-The bladder is emptied and the specimen is put into Bottle 2 which is now complete.
Both bottles are sent to laboratory for analysis.