Scheme Information Sheets
UK NEQAS for Specific Proteins
| Scheme Particulars | Indicative Details |
|---|---|
| Accreditation body | UKAS |
| ISO/IEC Accreditation status | ISO/IEC 17043:2023 |
| UKAS Accredited Proficiency Testing Provider No | 7860 |
| Objective of Scheme | Provides EQA coverage for Protein assays. This Scheme uses manipulated samples for the analytical assessment of an array of protein assays covering a wide concentration range for both Nephlometry and Turbimetric assays |
| Pre-, Analytical, Post- status | Analytical |
| Number of distributions per year (nominal) | 11 |
| Specimens per distribution | 3 |
| Number of Specimens per annum | 33 |
| Frequency of distribution | Monthly |
| Scoring system | ABC |
| Material distributed | Pooled, liquid human serum |
| Programme Director(s) / Organiser(s) | Finlay MacKenzie |
| Criteria for participation | All, but overseas by courier |
| Nominal sample volume (mL) | 1.0 |
| Sample presentation TACs | All analytes in the same tube |
| Data in Chemistry on-line Dashboard | Yes |
| Analyte | Approx Range | Default Units | Target Value | B Score Limit (%) | C Score Limit (%) |
|---|---|---|---|---|---|
| Alpha-1-acid glycoprot | 0 – 3 | g/L | ALTM | 7.5 | 10.0 |
| Alpha-1-antitrypsin | 0 – 2 | g/L | ALTM | 10.0 | 10.0 |
| Alpha-2 macroglobulin | 0 – 3 | g/L | ALTM | 10.0 | 15.0 |
| C3 | 0 – 3 | g/L | ALTM | 10.0 | 10.0 |
| C4 | 0 – 0.6 | g/L | ALTM | 12.5 | 15.0 |
| Caeruloplasmin | 0 – 0.5 | g/L | GLTM | 25.0 | 20.0 |
| Haptoglobin | 0 – 2 | g/L | ALTM | 7.5 | 10.0 |
| IgA | 0 – 4 | g/L | ALTM | 7.5 | 10.0 |
| IgG | 0 – 18 | g/L | ALTM | 7.5 | 10.0 |
| IgM | 0 – 4 | g/L | ALTM | 10.0 | 10.0 |
| Immunochem Albumin | 15 – 70 | g/L | ALTM | 7.5 | 10.0 |
| Transferrin | 0.5 – 5 | g/L | ALTM | 7.5 | 10.0 |
| Transthyretin | 0 – 0.5 | g/L | ALTM | 7.5 | 10.0 |
| Abbreviation | Expansion |
|---|---|
| ALTM | All Laboratory Trimmed Mean |
| GLTM | Group Laboratory Trimmed Mean – which is the Method Principle Mean |
| MLTM | Method Laboratory Trimmed Mean – usually a manufacturer system / analyser mean |
| XALTM | An external value that may be from a Reference Method System |
| OGLTM | A Method Principle Mean used as the target for all laboratories |
| OMLTM | A specific Method Mean used as a target for all laboratories |
| MED | Median |
