Specimen Requirements
Title
Antistreptolysin O (ASO) Antibodies
Specimen Requirement
Collect SST, after 30 minutes of clotting, promptly centrifuge and send 2.0 mL serum.
Alternate Sample: Red top
Methodology
Latex immunoturbidimetry
Stability
Room temp: 14 days, Refrigerated: 14 days, Frozen: 14 days
Reference Range
By Report*
Turnaround
1-2 days
Clinical Use
Document exposure to streptococcal streptolysin O. A marked rise in titer or a persistently elevated titer indicates that a Streptococcus infection or poststreptococcal sequelae are present.
Test Code
ASO