Table 3 Clinical laboratory tests with normal ranges.

From: An integrated framework for identifying clinical-laboratory indicators for novel pandemics: COVID-19 and MIS-C

Clinical laboratory test

Abnormality threshold

Max/min

Absolute eosinophil count

<0.02 × 109 cells/L

Min

Absolute lymphocyte count

<1.5 × 109 cells/L in patients 8 months of age or older and of <4.5 × 109 cells/L in patients younger than 8 months of age

Min

Albumin

≤3 g/dl

Min

ALT

≥40 U/L

Max

AST

>50 U/L

Max

Basophil automated

<0.021 × 109 cells/L

Min

Bilirubin, direct

>0.4 mg/dL

Max

Bilirubin, total

>1 mg/dL

Max

BNP

>400 pg/mL

Max

BUN

>18 mg/dL

Max

C-Reactive Protein

≥3 mg/L

Max

Creatinine

>0.59 mg/dL

Max

D-Dimer

>300 ng/mL

Max

ESR

≥40 mm/h

Max

Ferritin

>500 mg/L

Max

Fibrinogen

>400 mg/dL

Max

GGTP

>51 U/L

Max

Hematocrit

<30 percent

Min

Hemoglobin

<9 g/dL

Min

IL10

>9.2 pg/mL

Max

IL2

>9 pg/mL

Max

IL2 Receptor

>858.2 pg/mL

Max

IL4

>3 pg/mL

Max

IL6

>9 pg/mL

Max

IL8

>116 pg/mL

Max

INR

>1.1

Max

LDH

>500 U/L

Max

Monocyte automated

<0.2 × 109 cells/L

Min

Neutrophil automated

>7.7 × 109 cells/L

Max

PCT

>50 ng/mL

Max

Platelet

<150,000 mm3

Min

RBC

<3.8 × 1012 cells/L

Min

TNF

>22 pg/mL

Max

Troponin I

>0.04 ng/mL

Max

Troponin T

>0.1 ng/mL

Max

WBC

>20 × 109 cells/L

Max

  1. Ranges for 38 clinical laboratory tests examined in the study, including blood counts: WBC, hemoglobin, hematocrit, RBC, platelets, neutrophil, ALC, monocyte, basophil, AEC; inflammatory markers: ESR, C-reactive protein, procalcitonin, ferritin; coagulation markers: fibrinogen, D dimer, INR; liver function tests: AST, ALT, albumin, bilirubin, GGTP, LDH; cardiac injury markers: troponin, BNP; chemistries: BUN, creatinine; cytokine panel/interleukins: IL’s and TNF. Each test is shown with the threshold used to determine abnormality. (Min: low values are of interest; max: high values are of interest).