Is antigen testing done with a nasal swab?
Feb 10, 2023
Source: Cainiu Health
Dr. Xu Gang
Introduction
In general, antigen testing refers to the detection of the novel coronavirus antigen, which may involve either a nasal swab or a throat swab. When undergoing novel coronavirus antigen testing, it is important that patients refrain from smoking, drinking alcohol, or other activities within 30 minutes prior to the test. While waiting for the test, individuals should avoid talking with others, gathering in crowds, and must wear a mask at all times.
Generally, antigen testing refers to the detection of SARS-CoV-2 antigens. The SARS-CoV-2 antigen test may use either a nasal swab or a throat swab. Specific details are as follows:
1. Nasal Swab
SARS-CoV-2 antigen testing can be performed using a nasal swab. Typically, hold the swab handle and gently insert the swab into the subject's nasal cavity. Stop advancing when slight resistance is felt, then gently rotate the swab 3–5 times before slowly removing it. Place the collected sample into the specimen collection tube, break off the handle at the designated notch, and seal the tube to complete the sampling process.
2. Throat Swab
Alternatively, SARS-CoV-2 antigen testing can also be conducted using a throat swab. This method involves collecting upper respiratory specimens by using a disposable swab to wipe both sides of the pharynx, tonsils, and posterior pharyngeal wall. It is advantageous due to its simplicity and non-invasive nature.
When undergoing SARS-CoV-2 antigen testing, it is important to avoid smoking, drinking alcohol, or similar activities within 30 minutes prior to testing. While waiting for the test, do not talk with others, avoid gathering in crowds, and wear a mask throughout the entire process. Individuals with colds are advised to maintain a light diet in daily life and avoid consuming spicy or irritating foods.
