WS/T 804-2022 in English
VALIDBasic technical standard for clinical chemistry laboratory
- Issued on:2022-11-02
- Implemented on:2023-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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本标准规定了医学实验室在临床化学检验领域的基本技术要求，包括人员、设施与环境、设备试剂与耗材、检验前过程、检验过程、质量控制和结果报告的基本技术要求。
本标准适用于开展临床化学检验的医学实验室。
Introduction
Analysis of the core content of the standard
As a basic technical specification in the field of clinical chemistry testing, this standard forms a complete closed loop from personnel qualifications, facility environment, equipment management to quality control of the entire testing process. Compared with previous standards, the 2022 version focuses on strengthening the following aspects:
- Calibration and maintenance requirements for automated detection systems
- Independent space specifications for special detection technologies such as chromatography and mass spectrometry
- Information notification requirements for pre-inspection processes
- Quality target setting method based on biological variability
Comparative analysis of key factors
| Elements | Requirements of this standard | Comparison with international CLSI standards | Key points for implementation |
|---|---|---|---|
| Calibration of fully automatic biochemical analyzers | ≥1 time per year, covering optical path/sampling/temperature control system | EP31 requires performance verification cycle ≤6 months | A multi-dimensional calibration record tracking system needs to be established |
| Use of quality control products | 2 concentration levels per batch, using multi-rule quality control | C24 recommends Westgard rule combination | Matrix effect assessment is required |
| Reference interval verification | Direct method meets WS/T402 requirements | EP28-A3c provides indirect method guidance | Pediatric projects need to pay special attention to WS/T780 |
Technical implementation case
Case 1: Construction of chromatography-mass spectrometry laboratory
When a tertiary hospital built an LC-MS laboratory according to clause 5.1.2 of the standard:
- An independent gas cylinder room was set up and a hydrogen alarm device
- A double-lock explosion-proof fume hood was installed in the pretreatment area
- The temperature control system achieved precise control of 18-22℃±1℃
Case 2: Detection system comparison plan
The laboratory implemented the system comparison required by clause 9.3.1:
- Selected 25 clinical samples covering the medical decision level
- Used Passing-Bablok regression analysis
- Set the deviation <1/4TEa as the acceptable standard
Standard evolution analysis
This standard is consistent with GB/T 22576.4-2021 form a complementary relationship:
| Version | Major updates | Clinical impact |
|---|---|---|
| 2022 version | Add acceptance requirements for automated assembly lines | Standardize the construction of intelligent laboratories |
| 2018 version | Clarify mass spectrometry technical specifications | Promote the development of precision testing |
Implementation recommendations
Phase-based implementation path
- Preparation phase (1-3 months): Conduct gap analysis, focusing on evaluating the integrity of equipment files
- Pilot phase (4-6 months): Select routine biochemical projects to establish standardized processes
- Promotion phase (7-12 months): Fully implement the quality control system
Solutions to common problems
Problem: The stability verification cycle of self-prepared reagents is long
Solution: Use accelerated test method (7 days at 40°C = 1 month at room temperature) combined with real-time monitoring
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