Group A Streptococcus Direct, DNA Probe

CPT: 87650
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Test Details

Synonyms

  • Streptococcus Group A Direct, DNA Probe
  • Gen-Probe® Group A Streptococcus Direct Test

Use

Uses nucleic acid hybridization for the qualitative detection of group A streptococcal RNA as an aid in the diagnosis of group A streptococcal pharyngitis from throat swabs

Limitations

Blood and potentially other chemiluminescent substances may interfere with this test. A negative test does not exclude the possibility that the numbers of group A streptococcal cells may be below the level of detection of the assay. Some strains of Streptococcus equi and rare strains of nonhemolytic streptococci which react with group G antisera may result in a false-positive reaction.

Methodology

DNA probe

Specimen Requirements

Specimen

Swab of posterior oropharynx, tonsils, or other inflamed area

Volume

One or two swabs

Container

Copan Double Dacron dry swab in transport tube without medium (red cap)

Storage Instructions

Throat swabs are transported to the laboratory at room temperature within 48 hours after specimen collection. After receipt in the laboratory, specimens are stored refrigerated and tested within 72 hours.

Causes for Rejection

Throat swab that contains visible blood; improper labeling; inappropriate specimen transport device; specimen received after prolonged delay (more than 48 hours); source other than throat

Clinical Information

References

Gen-Probe® Group a Streptococcus Direct Test package insert, Gen-Probe® Incorporated, San Diego, Ca.

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
180786 Strep Gp A Direct, DNA Probe 5036-9 180786 Strep Gp A Direct, DNA Probe 5036-9

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CPT Statement/Profile Statement

The LOINC® codes are copyright © 1994-2017, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf