Here are a few descriptions for the WordPress post tag “血常規” in Traditional Chinese, ranging in style and detail:

**Option 1 (Concise and Direct):**

> 關於血常規檢查的相關資訊，包含檢驗項目、目的、正常值範圍及臨床意義等等。 (About information related to complete blood counts. Include test items, purposes, normal ranges, and clinical significance.)

**Option 2 (Slightly More Detail):**

> 血常規分析，又稱為全血細胞計數，是評估整體健康狀況的一種常見檢驗。 這個標籤下的文章將探討血常規各項指標的意義，幫助您理解檢驗報告，及早發現潛在健康問題。
(Complete Blood Count (CBC), also known as a full blood cell count, is a common test to assess overall health. Articles under this tag will explore the meaning of various CBC indicators, helping you understand your test results and identify potential health problems early on.)

**Option 3 (Emphasis on Accessibility):**

> 血常規：深入淺出地解讀血常規檢查。 不管您是剛接觸健康資訊還是已經是老手，這裡的文章都將以清晰易懂的方式解釋血常規的檢驗項目，以及它們在疾病診斷和預防上的重要性。
(Complete Blood Count: An easy-to-understand explanation of the complete blood count test. Whether you’re new to health information or a seasoned pro, the articles here will explain blood count test items and their importance in disease diagnosis and prevention in a clear and accessible way.)

**Option 4 (More Technical/Specific):**

> 此標籤涵蓋血常規檢查的各個面向，包括紅血球 (RBC)、白血球 (WBC)、血小板 (PLT)、血色素 (HGB/Hb) 及相關指標的深入分析。 適合對血常規有進一步了解需求的專業人士或對自身健康有深度關切的讀者。
(This tag covers all aspects of complete blood count testing, including in-depth analysis of red blood cells (RBC), white blood cells (WBC), platelets (PLT), hemoglobin (HGB/Hb), and related indicators. Suitable for professionals who need a deeper understanding of complete blood counts or readers who are deeply concerned about their own health.)

**How to use these in WordPress:**

1. **Edit Post Tag:** Go to your WordPress dashboard and navigate to Posts > Tags.
2. **Edit “血常規”:** Find the tag “血常規” and click “Edit.”
3. **Add Description:** In the “Description” field, paste your chosen description from above.
4. **Update:** Click “Update” to save your changes.

Choose the description that best fits the tone and content of your blog! Remember to tailor it to your target audience.