Exam 14: Fecal Analysis

Microscopic screening of a pale,frothy stool from a patient with prolonged diarrhea is performed for fecal neutrophils,fats,and meat fibers.The fecal neutrophil examination result is negative,increased large and small orange droplets are seen in the fat stains,and 10 unstriated muscle fibers are observed. -Based on the information provided,what is the significance of the pale,frothy stool?

A pale,frothy looking stool is indicative of:

When performing the Apt test,a pink color that remains in the supernatant during testing indicates:

The unpleasant odor associated with fecal analysis is caused primarily by:

Large orange-red droplets seen on direct microscopic examination of stools that have been mixed with Sudan III stain can represent:

When performing microscopic examination of a stool for muscle fibers,the structures that are counted:

In the Van de Kamer method for quantitative fecal fat determinations,fecal lipids are:

A negative trypsin test on a fecal sample can indicate which of the following?

Microscopic screening of a pale,frothy stool from a patient with prolonged diarrhea is performed for fecal neutrophils,fats,and meat fibers.The fecal neutrophil examination result is negative,increased large and small orange droplets are seen in the fat stains,and 10 unstriated muscle fibers are observed. -Based on the information provided,what is the condition indicated by the increased orange droplets?

State whether or not the following scenarios should be of concern to a laboratory supervisor and why: -A strongly positive stool Clinitest performed on an infant is accompanied by a stool pH of 8.0.

State whether or not the following scenarios should be of concern to a laboratory supervisor and why: -An Apt test performed on a black,tarry stool is negative for fetal hemoglobin.

The recommended specimen for quantitative fecal testing is a:

Stools from persons with steatorrhea contain excess amounts of:

The guaiac test detects both hemoglobin and porphyrin.

The electrolyte content of normal feces is similar to that of plasma.

Microscopic examination of stools mixed with Sudan III stain,glacial acetic acid,and then heated will show small orange-red droplets that represent:

False-negative results for upper GI bleeding can be caused by:

Tests for quantitative fecal fats include all of the following except:

The presence of amebic dysentery may be suspected when a stool:

State whether or not the following scenarios should be of concern to a laboratory supervisor and why: -In the evaluation of a stool specimen,the results were abnormal in the trypsin test and normal in a chymotrypsin test.