Here are a few options for a WordPress post_tag description, in traditional Chinese, for the title “抗原檢查” (Kàngyuán jiǎnchá – Antigen Test), ranging from simple and clear to slightly more detailed:

**Option 1: Short and Sweet**

* **英文:** Antigen Testing
* **描述 (Description):** 快速檢測體內抗原的檢測方式。 (Kuàisù jiǎncè tǐnèi kàngyuán de jiǎncè fāngshì.) – A method for the rapid detection of antigens in the body.

**Option 2: Slightly More Informative**

* **英文:** Antigen Testing
* **描述 (Description):** 用於診斷特定疾病或病毒的抗原快速篩檢。 (Yòngyú zhěnduàn tèdìng jíbìng huò bìngdú de kàngyuán kuàisù shāijiǎn.) – Rapid screening for antigens, used to diagnose specific diseases or viruses.

**Option 3: Focused on COVID-19 (if applicable)**

* **英文:** Antigen Testing
* **描述 (Description):** 針對COVID-19和其他呼吸道感染疾病的快速檢測工具。 (Zhēnduì COVID-19 hé qítā hūxīdào gǎnrǎn jíbìng de kuàisù jiǎncè gōngjù.) – A rapid testing tool for COVID-19 and other respiratory infections.

**Option 4: Consider Privacy (if relevant to your content)**

* **英文:** Antigen Testing
* **描述 (Description):** 了解關於抗原檢測的最新資訊，包括其原理、應用和注意事項。 (Liǎojiě guānyú kàngyuán jiǎncè de zuìxīn zīxùn, bāokuò qí yuánlǐ, yìngyòng hé zhùyì shìxiàng.) – Learn the latest information about antigen testing, including its principles, applications, and precautions.

**Important Considerations When Choosing:**

* **The Overall Tone of Your Website:** Does your site aim to be simple and direct, or more in-depth?
* **Target Audience:** Are you talking to general readers or a more medically informed audience?
* **Specificity of Your Posts:** Are your posts mainly about COVID-19 antigen tests, or a broader scope of diseases?
* **Word Count:** WordPress post tag descriptions can have limited length. Usually, you want to keep it concise.
* **SEO (Search Engine Optimization):** Include relevant keywords like “抗原” (kàngyuán – antigen) and “檢測” (jiǎncè – testing), and any specific diseases that that you write about often (e.g., COVID-19).

**How to Use in WordPress:**

1. **Go to your Post Tags section in WordPress Admin (Posts -> Tags).**
2. **Add a new tag, or edit the existing “抗原檢查” tag.**
3. **In the “Description” field, enter the description of your choice.**
4. **Save.**

Choose the description that best suits your specific needs and the content of your blog! Good luck!