Precipitin Preparation Special Ag
Test Code
SPECP
Description
Collect
Serum separator tube or a red top tube.
Specimen Preparation
Separate serum from cells immediately by centrifugation and aliquot into a polypropylene or similar plastic tube.
Preferred volume: 1 mL serum
Pediatric Collection
Minimum Volume: 0.5mL serum
Unacceptable Conditions
Plasma
Storage Transport Temp
Ship within 48 hours of collection if shipping at ambient temperature.
Preferably ship samples refrigerated or frozen on dry ice in a well insulated container.
Send serum Priority Overnight via FedEx.
Stability
48 hours ambient. 7 days refrigerated, 1 year at -20°C or below. Avoid repeated freeze thaw cycles.
Notes
Note: 0.25 mL serum is required for one precipitin. Add 0.1 mL for each additional precipitin ordered.
Performed
Mon
Methodology
Immunodiffusion
Reported
Results available maximum 12 days following sample receipt.
Department
PrecipitinsSynonyms
PPTP
Reference Interval
Negative
Interpretation
Precipitating IgG antibodies are often present in serum of patients with hypersensitivity pneumonitis (HP) due to exposure to enviromental antigens. The serum precipitin test assists in the diagnosis of HP.
CPT Code
86331