Table 2.
Evolution of the 14 patients' laboratory values
| ICU admission | D0 | D7 | |
|---|---|---|---|
| CRP, mg/L (range) | 106 (17–318) | 6 (1–258) | 7 (1–115) |
| normal range: <4 mg/L | |||
| Fibrinogen, g/L (range) | 8 (7–10) | 4 (1–10) | 4 (2–9) |
| normal range: 2–5 | |||
| Ferritin, ng/ml (range) | 873 (181–8100) | 622 (170–5759) | 545 (116–3275) |
| normal range: 20–260 | |||
| D‐Dimer, ng/ml (range) | 1041 (448–3301) | 1568 (215–5820) | 1447 (327–4542) |
| normal range: 0–500 | |||
| Lymphocytes, G/L (range) | 0.49 (0.16–1.00) | 0.73 (0.37–1.63) | 0.80 (0.22–1.62) |
| normal range: 1.20–3.60 | |||
| Anti‐SARS‐CoV‐2 IgM, ratio versus control sample (range) | – | 4.4 (0.0–80.6) | 15.7 (0.0–59.3) |
| Cutoff value ≥1.0 | |||
| Anti‐SARS‐CoV‐2 IgG, ratio versus control sample (range) | – | 3.0 (0.0–6.5) | 4.7 (0.1–8.6) |
| Cutoff value ≥1.4 |
Abbreviations: CRP, C‐reactive protein; D0, date of convalescent plasma transfusion (CPT); D7, 7 days after CPT; ICU, intensive care unit; IgG, immunoglobulin G; IgM, immunoglobulin M; SARS‐CoV‐2, severe acute respiratory syndrome coronavirus 2.