Table 1. Allowable Errors.

From: Plastic Syringes Instead of Heparin-added Dedicated Syringes for Blood Gas Analysis: A Prospective Observational Study

Allowable error Unit Decided methods
pH ±0.04 CLIA performance criteria
PCO2 ±5 mmHg CLIA performance criteria
PO2 ±7 mmHg CLIA performance criteria
HCO3 ±1.6 mmol/L {(ULN 26) − (LLN 22)} × 0.4
Na ±4 mmol/L CLIA performance criteria
K ±0.5 mmol/L CLIA performance criteria
Ca ±0.08 mmol/L {(ULN 1.35) − (LLN 1.15)} × 0.4
Hb ±1.12 g/dL CLIA performance criteria
Ht ±3 % CLIA performance criteria
SO2 ±1.6 % {(ULN 99) − (LLN 95)} × 0.4
BE ±1.6 mmol/L {(ULN 2) − (LLN −2)} × 0.4
Table 2. Patient Characteristics.

From: Plastic Syringes Instead of Heparin-added Dedicated Syringes for Blood Gas Analysis: A Prospective Observational Study

Variables
 Age, years 72 ± 14.5
 Male, N 75%
 BMI, kg/m2 24 ± 12.4
 Smoking, N 65%
 SBP, mmHg 122 ± 28.9
 HTN, N 70%
 DM, N 60%
 Anemia, N 40%
 Hb, N 12.5 ± 1.95
 CKD, N 25%
 COPD, N 30%
 Malignancy, N 10%
 Ventilator, N 20%
 Antiplatelet therapy, N 40%
 Anticoagulation therapy, N 10%
 Plt, ×104/μL 18.8 ± 5.8
 PT-INR 1.10 ± 0.11
Cause of admission
 Heart disease, N 55%
 Lung disease, N 25%
 Infectious disease, N 15%
 Others, N 5%
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