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Test Code ASO Screen ANTISTREPTOLYSIN-O, SCREEN (ASO)

Aliasis

Antistrep-O Titer

Patient Preparation

Fasting preferred, but not required

Collection Method

Venous collection

Minimum Volume

1.0 mL

Container

Serum: Red/Gold top

Preferred Specimen

Gold or Red top / Serum

Acceptable Specimen(s)

Serum:
-Gold top
-Red top

Reference or Target Ranges

Qualitative: -Negative: < 200 IU/mL -Positive: > 200 IU/mL Semi-Quantitative: 200 - ≥ 6400 IU/mL

Reportable Units

IU/mL

Critical Value

Not defined for this assay

Reasons for Rejection

QNS, Contamination, Improperly labeled, Improper specimen type

Specimen Stability

Ambient: 1 hour
Refrigerated: 48 hours
Frozen: 28 days

Performance Information

Days performed: Monday – Friday
Report Available: 1-3 days

Additional Information / Important Notes

Increased ASO titers may be associated with rheumatic fever or glomerulonephritis. An ASO titer of more than 200 IU/mL might be indicative of streptococcal infection. The titer should be monitored over a time period of 4 to 6 weeks.

Methodology/Method Description

The ASI ASO Slide Test is a latex slide agglutination assay for the qualitative and semiquantitative detection of antistreptolysin-O (ASO) antibodies

CPT Codes

86063