Regulations Governing Accreditation and Management of Drug Abuse Urine Testing and Medical Institutions Article 17

The urine specimens sent by the test consignor (hereafter referred to as the consignor) to the testing institution shall include blind performance test specimens accounting for not less than 5% of the total amount.The blind performance test specimens of the preceding Paragraph shall include 80% of negative specimens and 20% of positive specimens. The positive urine specimens shall be used mainly for detecting the drugs to be tested, and the test results shall be reported based on qualitative research.
中文原文 濫用藥物尿液檢驗及醫療機構認可管理辦法第17條
委託檢驗機構(以下簡稱委驗機構)送往檢驗機構之尿液檢體,應包括占總檢體數百分之五以上之盲績效監測檢體。
前項盲績效監測檢體,應包括約百分之八十之陰性檢體,其餘為陽性檢體,且陽性檢體以待測藥物為主;其監測,以定性結果判定之。

English translation for reference only; the Chinese text prevails. Not legal advice.