Sign in →

Test Code ASO Titer ANTISTREPTOLYCIN-O TITER – (ASO)

Aliasis

Antistrep-O Titer

Patient Preparation

Fasting preferred, but not required

Collection Method

Venous collection

Minimum Volume

1.0 mL

Container

Red Top 

Preferred Specimen

Gold or Red top / Serum

Acceptable Specimen(s)

Serum:
-Gold top SST
-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    (4oC to 8oC)

48 Hours

Frozen  

28 Days

Performance Information

Days and Time Performed

Monday-Friday

Expected Turn Around Time

1-3 Days

Stat Availability

No

Performing Bench

CRMC Serology

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

86060