Days Set Up
Monday - Friday
Analytic Time

8 hours

MiChart Code
Streptomycin Level
Soft Order Code

Test Updated:


AH (Anti-Hyaluronidase)
ASK (Anti-Streptokinase)
ASO (Anti-Streptolysin O)
DNAase Antibodies
Hyaluronidase Antibodies
NADase Antibodies
Streptococcal Antibodies
Streptokinase Antibodies
Streptolysin O Antibody
Streptozyme Screen

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

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Test Overview

Test Methodology

Agglutination of sensitized sheep cells

Test Usage

Aid in the diagnosis of current or previous group A streptococcal infections. Screening for antibodies to streptococcal antigens NADase, DNAase, streptokinase (ASK), streptolysin O (ASO) and hyaluronidase (AH): Positive test titered to 1:800; endpoint beyond 1:800 reported as > 1:800.

Reference Range

< 1:100

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Offsite

Collect specimen in SST tube. Centrifuge, aliquot serum into a plastic vial and freeze at -20C

Yellow Top Tube
Normal Volume
0.5 mL serum
Minimum Volume
0.3 mL serum

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.