A result set that needs a bounded answer

A hospitalized patient at 29 weeks 2 days with a singleton pregnancy has new blood pressures of 148/94 mmHg and 152/92 mmHg, four hours apart. The spot urine protein-to-creatinine ratio is 0.41 mg/mg, and the hematology and chemistry results are still arriving. The bench question is not whether the laboratory names the disease. It is which findings establish proteinuria or organ involvement, which require urgent communication under local policy, and where an angiogenic ratio can add bounded risk information.

The assay-specific sFlt-1/PlGF ratio supplies a bounded short-term risk statement. Routine proteinuria, platelet, creatinine, transaminase, and hemolysis results supply evidence about organ involvement. The ratio does not replace routine diagnostic evidence.

The FDA-cleared Elecsys sFlt-1/PlGF ratio applies only within its stated population and time window. A result outside that boundary may still be clinically important, but no alternate cutoff applies outside the validated range. Release verified routine findings promptly and use the ratio as an adjunctive risk result, never as a stand-alone diagnosis.