Serum separator tube or a red top tube.
Separate serum from cells immediately by centrifugation and aliquot into a polypropylene or similar plastic tube.
Preferred volume: 1 mL serum
Minimum Volume: 0.5mL serum
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.
48 hours amibient. 7 days refrigerated, 1 year at -20°C or below. Avoid repeated freeze thaw cycles.
Note: 0.25 mL serum is required for one precipitin. Add 0.1 mL for each additional precipitin ordered.
up to 12 days
Immunodiffusion (Precipitin Alternaria sp IgG);M2
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.