Table 2

Additional investigations

CXRLungs and pleural recesses are clear. Normal mediastinal contours.
CTPAThere is no large volume of ground-glass change, consolidation and no pleural fluid.
There are no classical features of COVID-19.
Blood filmPolychromasia. Rare basophilic stippling seen. Platelet anisocytosis with some large forms. Some neutrophil hypersegmentation
Parvo virusIgG positive, IgM negative
Mycoplasma IgMNegative
COVID-19 PCRPositive
ANA<400 weakly positivePresumed false positive
ANCANegative
Anti-GBMNegative
CK85 U/L
DATAnti-C3D positive 2+Anti IgG negative
Anti IgA negative
Anti IgM negative
AntiC3c negative
All others negative
Reticulocyte count × 109/L124206259306
Haptoglobin, g/L<0.30<0.30
Urine PCRNormal
Ferritin, μg/L2452Acute phase reactant
B12, ng/L420
Folate, μg/L8.9
G6PD, U/gHb9.3
Free kappa/lambda light chain ratio26.97/26.60
1.01(normal)
No evidence of myeloma
  • ANA, anti-nucleur antibody; ANCA, antineutrophil cytoplasmic antibody; CK, cretainine kinase; CTPA, CT pulmonary angiogram; CXR, chest X-Ray; DAT, direct antiglobulin test; GBM, glomerular basement membrane ; G6PD, glucose-6-phosphate dehydrogenase; Hb, haemoglobin.