Table 4.
Comparison of procalcitonin results obtained with Diazyme latex-enhanced immunotubidimetric assay on four different clinical chemistry platforms.
| Architect | Advia 2400 | Cobas C501 | |
|---|---|---|---|
| Advia 2400 | r=0.976 (p<0.001) Biasa, 0.37 ng/mL (0.05–0.70 ng/mL) Agreementb, 94%; 99%; 100% | – | – |
| Cobas C501 | r=0.964 (p<0.001) Biasa, −0.50 ng/mL (−0.97 to –0.04 ng/mL) Agreementb, 84%; 98%; 98% | r=0.968 (p<0.001) Biasa, −0.88 ng/mL (−1.35 to −0.40 ng/mL) Agreementb, 82%; 99%; 98% | – |
| AU5800 | r=0.958 (p<0.001) Biasa, −0.36 ng/mL (−0.65 to −0.07 ng/mL) Agreementb, 85%; 97%; 98% | r=0.962 (p<0.001) Biasa, −0.74 ng/mL (−1.18 to −0.29 ng/mL) Agreementb, 87%; 98%; 98% | r=0.952 (p<0.001) Biasa, 0.14 ng/mL (−0.22 to 0.50 ng/mL) Agreementb, 89%; 97%; 98% |
a
Mean bias and 95% Confidence Interval (95% CI).
b
Classification agreement calculated at 0.5, 2.0 and 10 ng/mL cut-offs.