Confirm the presence of precipitating antibodies to Thermoactinomyces vulgaris
Gold SST
SST - spin
Red - spin and separate
Serum separator (SST) or LabCorp 12mL plastic transport tube labelled as serum
Ambient (preferred) - 14 days
Refrigerated - 14 days
Frozen - 3 months
Excessive hemolysis
Double diffusion (Ouchterlony)
Negative