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. 2021 May 8;43:101982. doi: 10.1016/j.redox.2021.101982

Table 3.

NO and H2S levels based on biomarkers and disease severity.


NO Levels (nM)
p-Value H2S Levels (μM)
p-Value
Mean (n) ±SD Mean (n) ±SD
Troponin 0.14 0.64
Troponin ≤0.04 ng/ml 273.87(30) 137.36 1.17 (31) 0.21
Troponin >0.04 ng/ml 347.54 (13) 176.18 1.14 (15) 0.25
D-Dimer 0.08 0.85
D-Dimer ≤1000 ng/ml 240.00 (14) 111.99 1.14 (15) 0.15
D-Dimer >1000 ng/ml 326.45 (31) 163.98 1.13 (36) 0.24
Ferritin 0.43 0.94
Ferritin ≤600 ng/ml 266.12 (17) 141.11 1.14(18) 0.13
Ferritin >600 ng/ml 300.94 (35) 153.24 1.14(40) 0.23
CRP 0.56 0.76
CRP ≤ 1.8 mg/dl 325.33 (9) 138.17 1.15 (9) 0.21
CRP > 1.8 mg/dl 294.62 (37) 141.57 1.18 (43) 0.21
LDH 0.004 0.22
LDH ≤ 260 U/L 210.50 (10) 64.41 1.08 (11) 0.17
LDH > 260 U/L 323.16 (31) 167.63 1.17 (35) 0.22
BNP 0.21 0.11
BNP ≤ 1000 pg/ml 255.00 (15) 131.61 1.09 (16) 0.12
BNP > 1000 pg/ml 322.53 (17) 163.45 1.19 (20) 0.21
RDW 0.16 0.92
RDW ≤ 14.5% 265.86 (36) 109.38 1.14 (37) 0.23
RDW > 14.5% 323.17 (24) 174.51 1.15 (30) 0.18
Lactate 0.05 0.10
Lactate ≤ 1.25 mmol/L 235.65 (17) 64.79 1.08 (17) 0.22
Lactate> 1.25 mmol/L 311.26 (27) 177.96 1.19 (31) 0.21
Procalcitonin 0.05 0.14
Procalcitonin ≤0.5 ng/ml 251.34 (29) 102.73 1.12 (31) 0.23
Procalcitonin >0.5 ng/ml 334.70 (20) 163.57 1.21 (23) 0.19
Severity of COVID 0.29 0.009
Mild - Moderate 274.02 (46) 133.67 1.10 (46) 0.17
Severe 314.68 (22) 154.25 1.23 (22) 0.24
Outcome <0.001 0.013
Alive 263.65 (60) 124.34 1.11 (60) 0.17
Expired 464.43 (8) 137.41 1.40 (8) 0.25

CRP - C-Reactive Protein; LDH - Lactate Dehydrogenase; BNP - Brain Natriuretic Peptide; RDW - Red cell Distribution Width.