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Test Code LAB219 Anti-Streptolysin O

Performing Lab

Arnot Ogden Medical Center

Ordering Recommendations

Demonstration of acute or recent streptococcal infection.

Collect

Serum

Collection Device

Gold Top Tube

Specimen Volume

5mL

Stability (from collection to initiation)

It is preferable to test samples on the day of their collection. If samples cannot be tested immediately, maintain them at 2-8C and test within 48 hours. Freeze if longer storage is necessary.
 

Refrigerated (2-8C)

 48 hours
Frozen (-20C) Indefinite
 

Storage/Transport Temperature

Room Temperature or Refrigerated

Minimum Requirements

3mL

Methodology

Latex Particle Agglutination

Start Date

9/13/2017

Last Review Date

6/16/2025

Specimen Handling

Allow the blood specimen to clot. Centrifuge. Separate serum.

Reference Interval

Negative (<200 IU/mL)

Unacceptable Conditions

  • Samples that are lipemic or hemolyzed are not acceptable for testing.
  • Samples that are obviously contaminated are not acceptable for testing.
  • Plasma is not acceptable for testing.

Remarks

  • A titer will be reflexed for positive ASO results.