| Application: | External quality control for detection of rheumatoid factor in serum. |
| Analytes: |
Rheumatoid factor (RF) (semi-quantitative), Rheumatoid factor (RF) (qualitative). |
| Kit contents: |
2 samples of 0.4 ml serum. |
| Participation: | Up to 4 times per year. |
| Certificate: | Issued after each participation, free of charge. |
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