Test
1) stool fat : simple & reliable screening test for steatorrhea
nl < 6g/day
stain III stain
2) Xylose absorption test
25g D-xylose PO
* normal : 5hr urine xylose excretion > 4 g
2hr blood > 30mg/dL
* abnormal : proximal small intestine mucosaħ¹ü½Ã °¡Àå ÈçÇÔ
(celiac sprue, tropical sprueµî)