A single-center, retrospective study of COVID-19 features in children: a descriptive investigation

Table 6 Laboratory examination reference ranges

Age	Sex	Hemoglobin (g/dL)	C-reactive protein (mg/L)	Platelets (× 10⁹/L)	Lymphocytes (× 10⁹/L)	Leukocytes (× 10⁹/L)
1 to < 2 months	M	102–127	0.09–10.41	221–471	2.22–5.63	8.36–13.66
	F	111–137		184–430	2.49–6.26	7.34–12.32
2 to < 6 months	M	105–130		215–448	2.57–7.54	7.91–13.41
	F	107–134		147–423	2.22–7.11	6.85–12.84
6 months to 2 years	M	104–125		185–399	2.47–6.41	7.73–13.12
	F	108–126		211–408	2.34–6.44	7.05–12.98
3–5 years	M	114–143		187–444	1.60–5.30	4.40–12.9
	F	114–143		187–444	1.60–5.30	4.40–12.9
6–8 years	M	115–143		186–400	1.40–3.90	3.80–10.4
	F	115–143		186–400	1.40–3.90	3.80–10.4
9–10 years	M	118–147		186–400	1.40–3.90	3.80–10.4
	F	118–147		186–400	1.40–3.90	3.80–10.4
11–14 years	M	124–157		176–381	1.00–3.20	3.80–10.4
	F	119–148		176–381	1.00–3.20	3.80–10.4
15–19 years	M	133–169		138–319	1.00–3.20	3.80–10.4
	F	119–148		158–361	1.00–3.20	3.80–10.4

From Reference Range Values for Pediatric Care 2nd edition pages 92–98 [31] released by the American Academy of Pediatrics

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