Test | Results | Interpretation |
SARS-CoV-2 test | Negative (10 February, 11 February, 17 February | COVID-19 not proven |
Blood cultures | No growth | No bacteraemia |
D-dimer | 3.88 mg/L FEU (normal range 0.01–0.99) | Haemostatic system activated: clot |
HbA1c test | 34 mmol/mol (normal range 0–41) | Normal |
Amylase | 36 units/L | Normal |
Lactate | 1.4 mmol/L | Normal |
Platelet | 286×109/L | Normal |
Prothrombin time and APTT | Within normal range | Normal |
Iron | 6 µmol/L (normal range 10–30) | Below lower limit |
Iron binding | 39 µmol/L (normal range 40–70) | Below lower limit |
CRP | 95 mg/L | Non-specific inflammatory reaction |
WCC | 14.5×109/L | Non-specific inflammatory reaction |
Renal profile | K+, Na+, urea, creatinine | Normal |
Vitamin B12 | 160 ng/L (normal range 200–770) | Deficit |
Serum folate | 2.20 µg/L (normal range 3.9–26.8) | Deficit |
Serum ferritin | 137 µg/L (normal range 13–150) | Normal |
GPI | No deficit | No PNH |
JAK2 p.V617F | Negative | No myeloproliferative neoplasms |
Transthoracic echocardiogram | Normal | No evidence of endocarditis |
HIT screen | Negative | Carried out on 14 May 2021: not diagnostic |
B2GP1 antibody screen | Negative | No evidence of antiphospholipid syndrome, carried out on 14 May 2021 |
Thrombophilia screen | Negative | Not sufficient evidence of VITT/VATT |
Explanations: myeloproliferative neoplasms include polycythaemia rubra vera, essential thrombocythaemia and primary myelofibrosis (the test does not entirely exclude them). HIT, IgG-specific heparin platelet factor 4 antibody (or heparin-PF4 screening test), assesses for VITT/VATT. B2GP1 is antibody screen for antiphospholipid syndrome.
APTT, activated partial thromboplastin time; CRP, C reactive protein; FEU, fibrinogen equivalent unit; GPI, glycosylphosphatidylinositol; HbA1c, haemoglobin A1c or glycated haemoglobin test; JAK2, Janus kinase-2 gene; K+, potassium; Na+, sodium; PNH, paroxysmal nocturnal haemoglobinaemia; VATT, vaccine-associated thrombotic thrombocytopaenia; VITT, vaccine-induced thrombotic thrombocytopaenia; WCC, white cell count.