Test Code OCC.DIAG OCCULT BLOOD/DIAGNOSTIC
Methodology
Color Reaction (Hemoccult® Sensa)
Useful for detecting bleeding into the gastrointestinal tract which
may be indicative of gastrointestinal disease.
Note: If test is to be performed for
colorectal neoplasm screening, order test
OCC.SCREEN “Occult Blood
Screen, Stool” instead.
Specimen Requirements
Patient Preparation:
Patient should observe the following drug and diet guidelines
prior to specimen collection:
1. For 7 days before and during stool collection
period, avoid nonsteroidal anti-inflammatory drugs such as
ibuprofen, naproxen, or aspirin (more than 1 adult aspirin a day).
Acetaminophen (Tylenol®) can be taken as needed.
2. For 3 days before and during stool collection
period, avoid vitamin C in excess of 250 mg/day from supplements,
and citrus fruits and juices.
3. For 3 days before and during stool collection
period, avoid red meats (beef, lamb, and liver).
Submit 1 of the following specimens:
Preferred:
Hemoccult® Sensa Card
Container/Tube: Hemoccult® Sensa card
Specimen Volume: Adequate amount of stool from a
random collection
Collection Instructions: Follow instructions
provided with Hemoccult® Sensa card.
Alternate:
Random Stool
Specimen must arrive within 2 hours of collection.
Container/Tube: Tightly-sealing, leakproof
container(s)
Specimen Volume: Fresh, unpreserved stool from a random collection
Collection Instructions:
1. Collect fresh, unpreserved stool.
2. If specimen is collected in a bedpan or collection
“hat,” patient should urinate into another
container before stool specimen is collected.
Note: 1. Do not
collect specimen from toilet.
2. Specimen in diaper is not acceptable. Stool
material should be scraped into a clean, dry container. Pediatric
patients with severe diarrhea may use a U-Bag collection system.
Place U-Bag over urethra to prevent urine from contaminating
specimen.
3. The following specimens will not be tested:
A. Stool >2 hours old
B. Contaminated with water or urine
4. Specimen source is required.
Day(s) Test Set Up
Monday through Sunday
Reference Values
Negative
Note: 1. False-positive
results can be caused by:
A. Red meat (beef, lamb, and liver)
B. Aspirin (>325 mg/day) and other nonsteroidal
anti-inflammatory drugs such as ibuprofen, indomethacin, and
naproxen
C. Corticosteroids, phenylbutazone, reserpine, anticoagulants,
antimetabolites, and cancer chemotherapeutic drugs
D. Alcohol in excess
E. The application of antiseptic preparations containing
iodine (povidone/iodine mixture)
2. False-negative results can be caused
by:
A. Ascorbic acid (vitamin C) in excess of 250 mg/day
B. Excessive amounts of vitamin C-enriched foods, citrus
fruits and juices
C. Iron supplements which contain quantities of vitamin C in
excess of 250 mg/day
Performing Laboratory
Logan Health Medical Center Laboratory
Test Classification and CPT Coding
82272
Specimen Transport Temperature
Ambient