21450:APT TEST (OCCULT BLOOD)

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21450:APT TEST (OCCULT BLOOD)
Alias Names: FETAL HGB APT
Methodology: Alkali Denaturation of Fetal Hemoglobin
Edit Date: 1/18/2008
Performed: Daily
Released: Same day
CPT Code: 83033
Specimen Collection Details
Collection: Newborn gastric aspirate or stool in clean, dry plastic container or tube. Also acceptable: Disposable diaber from hospital nursery or amniotic fluid. Specimen must be visibly bloody, containing fresh ‘red’ blood.
Handling: Send to the laboratory immediately.
Stability: 24 hours if refrigerated.
Standard Volume: Complete stool sample.
Minimum Volume: Any quantity containing visible blood can be tested.
Transport: Ambient temperature if delivered immediately; refrigerated up to 24 hours if transport delayed.
Comments: This test is used to distinguish maternal from fetal blood in newborn stool or gastric aspirate.
Rejection Criteria: Absence of visible blood; delayed ambient specimen or specimen refrigerated more than 24 hours.