The Influenza A+B Test is a rapid diagnostic assay designed to detect and differentiate between Influenza A and Influenza B viruses in respiratory specimens. It is commonly used in clinics, hospitals, emergency rooms, and point-of-care (POC) settings to aid in the timely diagnosis and management of flu infections.
Key Components
Test Device/Cassette: Contains antibodies specific to Influenza A and B antigens.
Nasopharyngeal (NP) or Throat Swab: Used to collect respiratory samples.
Extraction Buffer: Helps release viral antigens from the sample.
Dropper/Applicator: For transferring the sample to the test device.
How It Works
The test utilizes immunochromatographic technology to detect viral nucleoproteins. When a sample is applied, it migrates along the test strip, binding to antibodies that produce visible lines (positive result) for Influenza A, Influenza B, or both. A control line confirms proper test function.
Intended Use
Rapid screening of symptomatic patients (fever, cough, sore throat, fatigue).
Differentiation between Influenza A and B for appropriate treatment decisions.
Infection control in outbreaks (schools, nursing homes, workplaces).
Regulatory Approvals
FDA-Cleared (for specific tests) or CE-Marked (for EU compliance).
| 甲型流感+乙型流感测试 Influenza A+B Test | |||
| Influenza A/B Ag Test Cassette (Tri-lines) | Swab | Cassette | 25T |

1. Preparation
Read Instructions: Carefully review the test kit’s package insert before performing the test.
Gather Materials: Ensure you have the test device, nasal/throat swab, extraction buffer, and timer ready.
Room Temperature: Allow the test components to reach room temperature (15-30°C) if stored cold.
2. Sample Collection
Nasal Swab: Insert the sterile swab into the nostril (about 2-3 cm deep) and rotate it gently for 10 seconds to collect secretions.
Throat Swab (if required): Swab the back of the throat (avoid touching the tongue or teeth).
Alternative Samples: Some tests may use nasopharyngeal (NP) aspirates or washes.
3. Sample Preparation
Mix with Buffer: Place the swab into the extraction tube and swirl it for 10-15 seconds.
Press the Swab: Squeeze the tube while removing the swab to release maximum liquid.
Close the Tube: Secure the cap tightly to prevent leaks.
4. Test Execution
Apply Sample: Add 3-4 drops (or as specified) of the extracted sample into the test device’s sample well.
Start Timer: Begin timing immediately after sample application.
5. Reading Results
Wait 10-15 Minutes: Check results within the recommended time (do not read after 20 minutes).
Interpretation:
Positive (A or B): A colored line appears in the control (C) and either the A or B region.
Negative: Only the control line (C) appears.
Invalid: No control line—repeat the test with a new device.
6. Disposal
Discard used swabs, tubes, and test devices in biohazard waste containers.
High Accuracy & Reliability
Utilizes advanced immunoassay technology for detecting Influenza A and B antigens with high sensitivity (≥90%) and specificity (≥95%).
Minimizes false positives/negatives, ensuring reliable diagnostic results.
Fast & Easy Testing
Provides results in 10–15 minutes, enabling quick decision-making for treatment.
Simple two-step procedure: Add sample, read results—no complex equipment needed.
Multiple Sample Compatibility
Works with nasopharyngeal swabs, throat swabs, or nasal aspirates, offering flexibility in sample collection.
Includes buffer solution for optimal sample preparation.
Clear & User-Friendly Design
Visual readout (colored lines) for easy interpretation—no external devices required.
Built-in control line ensures test validity and proper performance.
Compact & Portable
Lightweight and ideal for point-of-care (POC) settings, including clinics, ERs, pharmacies, and home use.
No refrigeration needed—stable at room temperature (2–30°C).
Cost-Effective & Efficient
Eliminates the need for lab processing, reducing time and costs compared to PCR tests.
Enables early detection and isolation to prevent outbreaks.
Wide Clinical Applications
Supports early diagnosis during flu season, aiding in timely antiviral treatment.
Helps differentiate between Influenza A and B, guiding appropriate therapy.
Regulatory Approvals
CE Marked, FDA-Cleared (for some tests), and compliant with global quality standards.
Hospitals
Clinics
Pharmacies
Urgent care centers
Testing labs
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