The Sofia Influenza A+B Fluorescent Immunoassay (FIA) uses advanced immunofluorescence-based lateral-flow technology to detect influenza A and influenza B viral nucleoprotein antigens.

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Test for Both Influenza and RSV With One Patient Sample

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Product Specifications: 
Product Spec NameProduct Spec Data
Sample type

Nasal swab, nasopharyngeal swab, nasopharyngeal aspirate/wash

Time to results

15 minutes

Kit storage conditions

Room temperature (15°C to 30°C/59°F to 86°F)


Positive and negative

Nasal Swab Sensitivity*

A: 90%, B: 89%

Nasopharyngeal Swab Sensitivity*

A: 97%, B: 90%

Nasopharyngeal Aspirate/Wash Sensitivity*

A: 99%, B: 88%

Nasal Swab Specificity*

A: 95%, B: 96%

Nasopharyngeal Swab Specificity *

A: 95%, B: 97%

Nasopharyngeal Aspirate/Wash Specificity*

A: 96%, B: 96%

Shelf life

24 months from date of manufacture

Transport Media Compatibility

Copan Universal Transport Media, Hank’s Balanced Salt Solution, M4, M4-RT, M5, M6, Modified Liquid Stuarts, Saline, Starplex Multitrans

CLIA Complexity


Short Name: 
Sofia Influenza A+B

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Product Benefits: 
CLIA waived for nasal and nasopharyngeal swabs

Easy to perform testing

Compatible with RSV Extraction Reagent

A single sample can be used to run both Sofia Influenza A+B and Sofia RSV

Dual work modes

Adjusts to your volume fluctuations

Self-contained test cassette

Clean, easy to use and dispose of

Fixed-volume pipette

Collects and dispenses correct amount of sample needed for testing

Objective result

Eliminates the subjectivity of a visual result

All components included in kit

Ready to use with Sofia, no need for additional equipment

Room temperature storage

No refrigerator space needed. Rapid influenza tests can be run immediately as needed.

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Product Information: 
Catalog NumberDescriptionKit Size / Case Size
20218 US

Test Kit

20254 XUS

Test Kit

Product Specifications Footnotes: 

*Refer to Package Insert for additional performance claims.

Is a kit?: 
Yes, this product is a kit.
Available for Evaluation: 
This product is available for evaluation. (Meaningless if not a kit.)
Clinical Studies: 
Not Archived
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