Table 6

Use of resources: laboratory tests ordered by at least three rheumatologists and costs

Laboratory testAll rheumatologists (n=23)Rheumatologists with correct diagnosis (n=14)Rheumatologists with other diagnosis (n=9)
ESR, Erythrocyte sedimentation rate; ALT, alanine aminotransferase; AP, alkaline phosphatase; CRP, C reactive protein; ANA/ANF, antinuclear antibody/antinuclear factor; AST, aspartate aminotransferase; TSH, thyroid stimulating hormone; γ-GT, γ-glutamyl transferase; LDH, lactate dehydrogenase; T4, thyroxine; CK, creatine kinase.
ESR1612 4
Creatinine1510 5
Haemoglobin1411 3
Leucocytes1311 2
ALT109 1
AP108 2
CRP96 3
Thrombocytes97 2
Erythrocytes87 1
Mean cell volume87 1
Differentiation86 2
Rheumatoid factor86 2
ANA/ANF85 2
AST76 1
TSH75 2
Calcium75 2
γ-GT64 2
Glucose53 2
LDH33
Phosphate32 1
Free T433
CK32 1
Uric acid32 1
Ferritin31 2
HLA-B2732 1
Total costs in euros
    Mean334613
    Median1221 9
    Range0–1630–163 0–51