Test for Fecal Fat

Question 1

the presence of increase fats in stool

Answer 1

Steatorrhea

Question 2

Steatorrhea Fecal characteristic

Answer 2

Greasy; foul odor; spongy consistency

Question 3

Steatorrhea fecal volume

Answer 3

increased

Question 4

Steatorrhea causes

Answer 4

Pancreatic insufficiency, Malabsorption, Maldigestion, and Absence of bile

Question 5

inadequate intestinal absorption of processed foodstuffs despite normal digestive ability

Answer 5

Malabsorption

Question 6

an inability to convert foodstuffs in the gastrointestinal tract into readily absorbable substances

Answer 6

Maldigestion

Question 7

Stain for Triglycerides

Answer 7

NEUTRAL FAT STAIN

Question 8

NEUTRAL FAT STAIN procedure

Answer 8

emulsified stool + 95% ETOH + Sudan III

Question 9

Stain for total fat content (including Fatty acids, soaps/fatty acid salts, and cholesterol)

Answer 9

SPLIT FAT STAIN

Question 10

SPLIT FAT STAIN procedure

Answer 10

stool + 36% acetic acid + Sudan III + Heat

Question 11

Neutral Fat Stain NORMAL

Answer 11

Malabsorption

Question 12

Neutral Fat Stain INCREASED

Answer 12

Maldigestion

Question 13

Split Fat Stain
INCREASED
NORMAL

Answer 13

Malabsorption
Maldigestion

Question 14

Gold standard quantitative test for fecal fat content

Answer 14

Van De Kamer Test

Question 15

Collection Considerations for Van De Kamer Test

Answer 15

• Requires the collection of at least a 3 days specimen.
• The patient must maintain a regulated intake of fat (100 g/day) before and during the collection period
• The specimen is collected in a large, pre-weighed container like paint cans
• The entire fecal collection is weighed and homogenized (e.g., using a mechanical shaker).

Question 16

Van De Kamer Test principle

Answer 16

Titration or titrimetric method

Question 17

Van De Kamer Test reagent

Answer 17

Sodium hydroxide (naoh)

Question 18

Formula for Fecal Fat:

Answer 18

Percent fat retention = [(Dietary fat - fecal fat) / Dietary fat] x 100

Question 19

Values less than 95% indicate _____ in these individuals

Answer 19

steatorrhea

Question 20

Disadvantage of VAN DE KAMER TEST

Answer 20

time consuming and uses corrosive and flammable solvents

Question 21

this is useful for children when standard fat diet is used

Answer 21

VAN DE KAMER TEST

Question 22

A test that is useful to differentiate malabsorption and maldigestion

Answer 22

D-XYLOSE TEST

Question 23

______ is a pentose sugar that does not need to be digested but does need to be absorbed to be present in the urine.

Answer 23

D-Xylose

Question 24

The xylose absorption test involves the patient’s ingestion of a dose of xylose, followed by the collection of a blood sample after ______________

Answer 24

2 hours and a 5-hour urine specimen.

Question 25

If D-xylose result is low/abnormal, the result indicates a ________

Answer 25

malabsorption