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. 2020 May 18;179(7):1029–1046. doi: 10.1007/s00431-020-03684-7

Table 3.

Lab investigations in children with documented SARS-CoV-2 infection

Author N Low WBC* High WBC* Lymphopenia/neutropenia* Low Plt* High Plt* High CRP-PCT* High CPK* High transaminase*
Lu [10] 171 45 (26%) 0 6 (3%) NR NR 105 (61%) NR 25 (15%)
Wang [33] 34 1 (3%) 5 (16%) 1 (3%) NR NR 1 (3%) NR NR
Xia [34] 20 4 (20%) 2 (10%) 7 (35%) NR NR 16 (80%) 5 (25%) 5 (25%)
Liu [39] 4 1 (25%) 0 0 NR NR 1 (25%) NR NR
Ji [41] 2 0 1 (50%) 0 NR NR 1 (50%) NR NR
Liu [11] 6 4 (67%) 0 6 (100%) NR NR NR NR NR
Zhou [42] 9 0 2 (22%) 0 NR NR NR NR NR
Li [40] 5 0 2 (40%) 0 NR NR 1 NR NR
Sun [31] 8 1 (12%) 6 (75%) 1 (12%) 2 (25%) 1 (12%) 4 (50%) 0 2 (25%)
Zheng [32] 25 NR NR 10 (40%) NR NR NR 0 0
Park [43] 1 0 0 0 0 0 0 NR NR
Liu** [44] 1 0 0 0 0 0 0 1 (100%) 0
Chan** [45] 1 0 0 0 0 0 0 NR 0
Cai** [46] 1 0 1 (100%) 0 1 (100%) 0 1 (100%) 1 (100%) 0
Chen** [47] 1 0 1 (100%) 0 0 0 1 (100%) 1 (100%) NR
Cai** [38] 10 1 (10%) 3 (30%) 3 (30%) 1 (10%) 2 (20%) 3 (30%) 5 (50%) 2 (20%)
Kam** [48] 1 1 (100%) 0 1 (100%) 1 (100%) 0 NR NR NR
Wang** [36] 31 2 (6%) 3 (10%) 2 (6%) 0 2 (6%) 4 (13%) 4 (13%) 6 (19%)
Zhang** [49] 2 0 2 (100%) NR 0 2 (100%) 1 (50%) NR 2 (100%)
Zhao** [50] 1 0 0 1 (100%) 0 0 0 0 0
Xu [37] 10 3 (30%) 0 5 (50%) 0 0 6 (60%) 0 1 (10%)
Su [55] 9 3 (33%) 1 (11%) 3 (33%) 1 (11%) 0 0 6 (66%) 0
Pan [58] 1 0 0 0 0 0 0 0 0
Chen [62] 31 12 (39%) 17 (55%) 0 1 (3%) 0 4 (13%) 2 (6%) 2 (6%)
Xing [59] 3 0 0 1 (33%) 0 2 (67%) 1 (33%) 0 0
Qiu [60] 36 7 (19%) 0 11 (31%) NR NR 6 (17%) 1 (3%) 3 (8%)
Zhang [61] 34 0 17 (50%) 0 NR NR 17 (50%) 0 NR
Shen [71] 9 0 1 (11%) 0 NR NR 1 (11%) NR 2 (22%)
Han [72] 7 0 2 (29%) 0 0 1 (14%) 3 (43%) 4 (57%) 3 (43%)
Cui [64] 1 0 1 (100%) 0 0 1 (100%) 1 (100%) 1 (100%) 1 (100%)
Zhang** [67] 1 0 0 NR 0 1 (100%) 1 (100%) NR NR
Le [69] 1 0 1 (100%) 0 0 0 0 1 (100%) 0
Li [75] 40 NR NR NR NR NR 1 (2%) NR 0
Parri [77] 100 11 (11%) 11 (11%) 14 (14%) NR NR 4 (4%) NR 10 (10%)
See [79] 4 NR NR NR NR NR NR NR 0
Tan [80] 10 0 1 (10%) 0 NR NR 1 (10%) 1 (10%) 2 (20%)
Du [81] 14 4 0 9 0 2 5 4 1
Zhu [84] 10 0 0 0 NR NR 0 NR 2 (20%)
Total 655 100 80 81 7 14 190 37 69
% 17.1a 13.7a 13.3b 5.1c 10.3c 31.1d 14.5e 12.4f

SARS-CoV-2 severe acute respiratory syndrome–Coronavirus-2, NR not reported, WBC white blood cell, Plt platelet, CRP C-reactive protein, PCT procalcitonin, CPK creatine kinase

aCalculated on the total of reported labs (N = 586); bcalculated on the total of reported labs (N = 608); ccalculated on the total of reported labs (N = 136); dcalculated on the total of reported laboratory investigations (N = 610); ecalculated on the total of reported labs (N = 255); fcalculated on the total of reported labs (N = 557)

*Normal ranges of main laboratory parameters were not always clearly defined. However, most of the studies defined values above 5 mg/L as high CRP and above 0.5 ng/mL as high PCT

**Studies included in the review by Henry et al. [67]