How long does it take to get influenza test results?
Feb 16, 2022
Source: Cainiu Health
Dr. Guo Xiheng
Introduction
How long does it take to get influenza test results? Further testing is needed to determine whether the infection is acute or a past infection. However, antibody testing may take 4–6 hours, as specimens must be batched—multiple samples are collected before processing them together. In contrast, influenza testing via throat swab yields results within 1–2 hours.
Influenza, commonly known as “the flu,” is an acute respiratory illness caused by influenza viruses of types A, B, or C. It is classified as a Category C notifiable infectious disease in China. How long does it take to obtain influenza test results? Below, we address this question.
How Long Does an Influenza Test Take to Yield Results?
The turnaround time for influenza testing depends on the specific method used and whether the goal is to distinguish between an acute (current) infection and a past infection. Rapid antigen detection—commonly performed using a nasopharyngeal or oropharyngeal swab—detects influenza viral antigens directly. This test is widely available in hospital fever clinics and clinical laboratories and represents one of the fastest diagnostic methods currently available; results are typically available within 1–2 hours. Alternatively, serological testing for influenza-specific antibodies (e.g., IgM and IgG) can be performed on blood samples to help differentiate acute from prior infection. However, antibody testing generally requires 4–6 hours to complete, as specimens must be batched for efficient processing. In contrast, rapid antigen testing via throat swab yields results significantly faster—within just 1–2 hours.
Once influenza is definitively diagnosed, early initiation of antiviral therapy is strongly recommended. Options include prescription antivirals such as oseltamivir, as well as traditional Chinese patent medicines—for example, Lianhua Qingwen Capsules. Early treatment helps alleviate symptoms and effectively eliminate the influenza virus from the body. Additionally, appropriate infection control measures should be implemented to prevent transmission to others, including interruption of transmission routes (e.g., through hand hygiene, respiratory etiquette, and isolation when necessary).
The above outlines the typical timeframe for obtaining influenza test results. We hope this information is helpful to you.
