haemoglobin	125 g/l (115–165)
erythrocyte sedimentation rate	74 mm/1st h (<20)
serum C-reactive protein	68 mg/l (<10)
rheumatoid factor	8 kIU/l (<30)
anti-cyclic citrunillated peptide antibody	600 U/ml (<10)
X-ray of hands	normal
X-ray of chest	normal