Table 1 Lab results on admission, Hospital Day (HD) 1 (Transfer to PICU), HD 3 (first dose of IVIG), HD 5, and HD 7 (after IVIG)

White Blood Cells

(3.9–10.7 × 10³/mcL)

13.8

19.0

22.8

21.1

29.3

Hemoglobin

(11.8–16.0 gm/dL)

12.0

9.4

9.5

8.6

9.0

Platelets

(135–371 × 10³/mcL)

200

224

234

223

271

Neutrophils (absolute)

(1.60–8.10 × 10³/mcL)

12.22

17.20

20.52

17.47

22.80

Lymphocytes (absolute)

(1.10–3.50 × 10³/mcL)

0.48

1.50

0.57

2.58

1.03

C-Reactive Protein

(0.1–1.7 mg/L)

400.7

352.4

415.0

327.5

118.6

Procalcitonin

(≤ 0.24 ng/mL)

-

 > 100.00

 > 100.00

-

-

Sodium

(136–145 mmol/L)

140

134

137

134

134

Creatinine

(0.60–0.88 mg/dL)

1.04

0.94

0.66

0.8

0.56

Albumin

(4.0–5.1 gm/dL)

4.1

3.2

2.7

2.8

2.5

Aspartate Aminotransferase

(13–35 unit/L)

66

44

96

52

57

Alanine Aminotransferase

(8–24 unit/L)

44

36

53

27

24

Bilirubin Total

(0.1–0.8 mg/dL)

1.3

0.9

2.1

2.2

0.6

Lactate Whole Blood

(0.5–2.2 mmol/L)

-

5.7

5.5

3.4

2.1

Troponin-I

(≤ 0.03 ng/mL)

-

-

0.22

0.18

-

Blood Culture

-

No Growth

-

-

-

Urine Culture

-

No Growth

-

-

-

COVID-19 IgG

(Negative)

-

-

Positive

-

-