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Test Code CSTREPA Culture, Strep A

Important Note

This test is only available to external sites that perform their own Strep A antigen testing. St. Luke's owned facilities should order CNOSETHROAT if a culture is desired for continued symptoms after a non-detected Strep A PCR result.

Additional Codes

  • Expanse Test Name: Culture Strep A
  • Medinet Ref Code:CSTREP
  • OV Code:RM*CSTREPA

Performing Laboratory

St. Lukes Hospital Laboratory

Methodology

Culture for beta-hemolytic strep A only following rapid antigen test at referring site.

Specimen Requirements

Specimen must arrive within 24 hours of collection.
 

1. Obtain specimen using a culture swab.
2. Remove cap and swab from tube.
3. Tilt patient’s head back to assist in opening of mouth as wide as possible.
4. Depress tongue with a tongue depressor so swab doesn’t touch oral mucosa or tongue.
5. If the patient has complained of 1 spot being sore, swab that area well.
6. In 1 continuous motion:
A. Swab 1 tonsillar area up then down.
B. Move to back of throat as far down as possible, and swab there.
C. Move to other tonsillar area and swab.
D. Swab behind uvula, and remove swab.
7. Return swab to transport tube.

8. Label tube with patient’s name (first and last), date and actual time of collection, and type of specimen.
9. Maintain sterility and forward promptly at ambient temperature only.

Note:  Specimen source is required on request form for processing.

Reference Values

Negative for beta-hemolytic strep A.

Pathogens will be identified.

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

CPT: 87081

Additional CPT Codes will be billed when appropriate.