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Test Code COVIDAG COVID19 Antigen

Infectious

Collection Method

Nasopharyngeal swab

Container

NPSWAB

Instructions/Special Handling

  • Tilt patient’s head back 70 degrees.
  • Gently and slowly insert a minitip swab with a flexible shaft (wire or plastic) through the nostril parallel to the palate (not upwards) until resistance is encountered or the distance is equivalent to that from the ear to the nostril of the patient, indicating contact with the nasopharynx.
  • Gently rub and roll the swab.
  • Leave swab in place for several seconds to absorb secretions.
  • Slowly remove swab while rotating it. Specimens can be collected from both sides using the same swab, but it is not necessary to collect specimens from both sides if the minitip is saturated with fluid from the first collection.
  • If a deviated septum or blockage create difficulty in obtaining the specimen from one nostril, use the same swab to obtain the specimen from the other nostril.
  • Place swab, tip first, into the transport tube provided.

Preferred Specimen

NPSWAB

Acceptable Specimes

NPSWAB

Units

N/A

Reference Ranges

CoV2:+ Positive Test SARS-CoV-2 (antigen present)
CoV2:- Presumptive Negative Test for SARS-CoV-2 (no antigen present)
Control Invalid Test invalid. Repeat the test.

 

 

Critical Values

N/A

Reasons for Rejection

 

Hemolysis N/A
Icterus N/A
Lipemia N/A
Other QNS, Contaminated, Improperly labeled, Improper specimen type

Specimen Stability

Ambient (15-25°C) 8 hours
Refrigerated (2-8°C) 7 days
Frozen (-20°C) N/A

 

Performing Site

Boone Health Laboratory

Performance Information

Days/Times Performed Daily 24/7
Expected Turn around Time Same day
Methodology/Method Description Cepheid

CPT Code(s)

87426