Antistreptolysin O
Label Mnemonic: ASO
Epic Lab Code: LAB688
Downtime Form: A-1a Miscellaneous Request
Commercial Mail-out Laboratory
5231 RCP
356-8593
Specimen(s):
Serum
Specimen Instructions:
Separate serum from cells as soon as possible.
Collection Medium:
Red top tube 5 mL (Clot Activator)
Minimum:
Preferred Minimum: 1 mL serum in a red top tube
Absolute Minimum: 0.4 mL serum in a red top tube
Rejection Criteria:
Heparinized plasma. Hemolyzed specimens.
Delivery Instructions:
Submit specimen to laboratory as soon as possible after collection.
Turn Around Time:
Within 24 hours upon receipt at reference laboratory
Reference Range:
0-1 year: 0-200 IU/mL 2-12 years: 0-240 IU/mL 13 years and older: 0-330 IU/mL
Comments:
Use of antistreptolysin O (ASO) for the diagnosis of acute group A streptococcal infection is rarely indicated. False negative results are common. Dnase B Antibody(LAB3020) is the recommended adjunct test for patients with suspected non-purulent complications of Group A streptococcal infection.
Methodology:
Quantitative Nephelometry
CPT Code:
86060
 
See also:
Dnase B Antibody, Serum