Timing of streptococcal serology testing for evidence of preceding Group A streptococcal infection is important. Streptococcal antibodies rise during the first month after infection, plateau for 3-6 months before returning to normal levels at 6-12 months.
Microbiology - Serology
Chilled (2 - 8 degrees Celsius)
If overnight - Chilled (2 - 8 degrees Celsius)
Preferred aliquot serum 5 mL
The cutoff values for serological evidence of Group A streptococcal disease vary dependent on the individual assay used by the laboratory. The reported values may deviate from those stated in the Ministry of Health Rheumatic Fever guideline.
ASO normal <200
Dnase normal 60 – 170
$34.12 (Exclusive of GST)
Onset date of illness desirable.