Table 1 Abnormal laboratory parameters
From: Cerebral venous sinus thrombosis associated with thrombocytopenia post-vaccination for COVID-19
| Parameter | Patient’s values | Normal values |
|---|---|---|
| Platelets (109/L) | 20 | 150–400 |
| Fibrinogen (mg/dL) | 98 | 150–450 |
| D-dimer (ng/mL) | > 10,000 | < 500 |
| C reactive protein (mg/L) | 17.6 | < 5 |
| Coagulation factor XIII (%) | 35 | 70–150 |
| Methylenetetrahydrofolate reductase (MTHFR) mutation (C677T) | Heterozygous | Absent |
| Homocysteine (μmol/L) | 16.7 | < 12 |
| Folic acid (ng/mL) | 0.9 | 3.9–26.8 |