STOOL FOR LEUKOCYTES - HSC - (F)
Test Code: SFL
This test looks for white blood cells in stoool. It is used in the diagnosis of inflammatory diarrhea which may be a symptom of an infection caused by bacteria such a shigella, Clostridium difficile, campylobacter, or salmonella. It may also occur in inflammatory bowel disease, such as Crohn's disease or ulcerative colitis. Rarely, fecal leukocytes can appear in diarrhea caused by other parasites or viruses, so a negative test result does not rule out a potential problem. 10 - 15% of stool samples with an invasive bacterial pathogen present will test negative for fecal leukocytes.
The test has generally poor sensitivity and specificity and should be performed only on a diarrheal stool (numerous small, loose, or watery stools, blood or mucus in the stool).
|Specimen Required:||Fresh stool sample. Specimen should be bloody, mucoid, or liquid. Soft/well-formed stool will be rejected.|
A descriptive report will be sent.
Slide preparation must be performed within 12 hours of collection.