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False-positive results in multiple immunometric assays due to an interference that changed over time8
| Analyte /Assay system | Untreated sample | Patient sample pre-treated with patient's E. coli isolatea |
|---|---|---|
| TNI Dade Dimension RxL (μg/L) | 235 | <2 |
| TNI Dade Stratus II (μg/L) | <0.4 | Not done |
| AFP Abbott AxSYM (μg/L) | 41 | 5 |
| CA-125 Abbott AxSYM (kU/L) | 225 | 14 |
| hCG Abbott AxSYM (IU/L) | 17 | <5 |
| TSH Abbott AxSYM (mU/L) | 14 | 1.4 |
Incubation of sample with patient's E. coli isolate for 16–18 h prior to assay
