ARUP's Laboratory Test Directory

Streptococcus pyogenes, Group A Antibody (Streptozyme®) with Reflex to Titer : 0050642

Mnemonic: STZ R

Methodology: Semi-Quantitative Hemagglutination
Performed: Mon-Sat
Reported: 1-3 days
Specimen Required: Collect: Serum separator tube, lavender (EDTA), or pink (K2EDTA).

Specimen Preparation: Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.05 mL)

Storage/Transport Temperature: Refrigerated.

Stability (collection to initiation of testing): After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
Reference Interval:
 
Test Number Components Reference Interval
 Streptococcus pyogenes, Group A Antibody (Streptozyme Screen) < 100 STZ units: Negative
 Streptococcus pyogenes, Group A Antibody  (Streptozyme Titer) < 100 STZ units: Negative

Note: If S. pyogenes Ab is 100 STZ units, then titer will be added. Additional charges apply
CPT Code(s): 86403; if reflexed, add 86406
Cross References: Hyaluronidase Antibody (Streptococcus pyogenes, Group A Antibody (Streptozyme®) with Reflex to Titer) , Streptozyme® (Streptococcus pyogenes, Group A Antibody (Streptozyme®) with Reflex to Titer)