Abstract
Objective: To ensure clinicians can rely on point-of-care testing results, we assessed agreement between point-of-care tests for creatinine, urea, sodium, potassium, calcium, Hb, INR, CRP and subsequent corresponding laboratory tests.
Participants: Community-dwelling adults referred to a community-based acute ambulatory care unit.
Interventions: The Abbott iSTATTM (Hb, clinical chemistry, INR) and the AfinionTM Analyser (CRP) and corresponding laboratory analyses.
Outcomes: Agreement (Bland Altman) and bias (Passing-Bablok regression).
Results: Among 462 adults we found an absolute mean difference between point-of-care and central laboratory analyses of 6.4g/L (95%LOA -7.9 to +20.6) for haemoglobin, -0.5mmol/L (95%LOA -4.5 to +3.5) for sodium, 0.2mmol/L (95%LOA -0.6 to +0.9) for potassium, 0.0mmol/L (95%LOA -0.3 to +0.3) for calcium, 9.0 µmol/L (95%LOA -18.5 to +36.4) for creatinine, 0.0mmol/L (95%LOA -2.7 to +2.6) for urea, -0.2 (95%LOA -2.4 to +2.0) for INR, -5.0 mg/L (95%LOA -24.4 to +14.4) for CRP.
Conclusions: There was acceptable agreement and bias for these analytes, except for haemoglobin and creatinine.
Participants: Community-dwelling adults referred to a community-based acute ambulatory care unit.
Interventions: The Abbott iSTATTM (Hb, clinical chemistry, INR) and the AfinionTM Analyser (CRP) and corresponding laboratory analyses.
Outcomes: Agreement (Bland Altman) and bias (Passing-Bablok regression).
Results: Among 462 adults we found an absolute mean difference between point-of-care and central laboratory analyses of 6.4g/L (95%LOA -7.9 to +20.6) for haemoglobin, -0.5mmol/L (95%LOA -4.5 to +3.5) for sodium, 0.2mmol/L (95%LOA -0.6 to +0.9) for potassium, 0.0mmol/L (95%LOA -0.3 to +0.3) for calcium, 9.0 µmol/L (95%LOA -18.5 to +36.4) for creatinine, 0.0mmol/L (95%LOA -2.7 to +2.6) for urea, -0.2 (95%LOA -2.4 to +2.0) for INR, -5.0 mg/L (95%LOA -24.4 to +14.4) for CRP.
Conclusions: There was acceptable agreement and bias for these analytes, except for haemoglobin and creatinine.
Original language | English |
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Pages (from-to) | 1-60 |
Number of pages | 60 |
Journal | Acute Medicine |
Volume | 19 |
Issue number | 1 |
Publication status | Published - 28 Mar 2020 |
Keywords
- ACUTE CARE
- AMBULATORY CARE
- CLINICAL ACCURACY
- POINT-OF-CARE TESTING
- SERVICE EVALUATION