Occult Bld Stool ()
Department: Chemistry
Test Synonym(s): LAB6095, Guaiac Stool, Hemoccult, Occult Stool
Test Components: Occult Blood Stool, pH Stool
CPT Codes: 82270
Methodology: Guaiac Test (Occult Blood) Dye (pH)
Reference Range: Occult Blood Stool = Negative
Tube Type: Stool Card
Specimen: Stool
Volume: 0.5 mL
Minimum Volume: 0.5 mL
Temperature: Room temperature (15 - 30 C)
Stability: Room temperature: 14 days
Reasons for Rejection: Improper collection, expired stool card, unlabeled specimen
Days Performed: Daily
Times Performed: Continuous
TAT: 2 hours
Significance: The following substances may cause false-positive results: red meat; Aspirin >325mg/day; non-steroidal anti-inflammatory drugs (such as ibuprofen, indomethacin, and naproxen); Corticosteroids; phenylbutazone; reserpine; anticoagulants; antimetabolites; and cancer chemotherapeutic drugs; alcohol in excess; application of antiseptic preparations containing iodine. Dietary iron supplements will not produce false-positive test results. The following substances may cause false-negative results: Ascorbic acid >250mg/day; Escessive amounts of vitamin C enriched foods; Iron supplements containing Vitamin C >250mg/day.
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