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JCTLM Database: higher-order reference materials, methods and services
Details : C1RMS108 - aspartate aminotransferase (AST) in Blood serum, Blood plasma
| Type (acronym) | rms |
|---|---|
| Type | reference measurement service |
| Unique Nomination Number | C1RMS108 |
| Reference Laboratory Status | EQAS-Organiser |
| Analyte Name | aspartate aminotransferase (AST) |
| IUPAC IFCC Number | EC 2.6.1.1 |
| Traceable to SI | Yes |
| Principle of Analytical Procedure | Kinetic spectrophotometry |
| Reference Method Listed in JCTLM | Yes |
| Name of JCTLM Listed Reference Method Procedure | IFCC Ref. Meth 37°C - AST |
| JCTLM Database Identifier Number | NRMeth 68 |
| Procedure Difference in Your Laboratory | Yes |
| Quantity | Catalytic activity concentration |
| From (0) | 0.33 |
| To (0) | 6.67 |
| Unit (0) | µkat/l |
| From (1) | 2.5 |
| To (1) | 2.5 |
| Unit (1) | % |
| Level of Confidence (%) | 95% |
| Comments on Concentration Range | The conversion factor for enzyme catalytic activity concentrations: 1 U/L = 0.01667 µkat/L |
| Reference Procedure Status Acceptable | Same uncertainty for all the measurements at every concentration: is it a real estimate? Trueness controls are not certified materials |
| Laboratory Preparing for Accreditation | Yes |
| Survey Organisation | JCTLM |
| Intercomparison Results Publicly Available | Yes - JCTLM-Website |
| Link to Comparison Results | Data from comparison studies are available on request |
| Participation Status in Intercomparison Surveys acceptable | YES |
| Remarks | Method used for setting target values in national EQA-surveys since 1997 |
| Recommended for Publication in the JCTLM List | Yes |
| Organization Acronym | INSTAND e. V. |
| Organization Name | Society for Promoting Quality Assurance in Medical Laboratories |
| Organization Website | http://www.instand-ev.de |
| Organization Country ISO Code | DE |
| Organization Country Name | Germany |
| Analyte Category Name | Enzymes |