Study note

Urine dipstick protein grading and hospital incidence of pre-eclampsia

THE CONTEXT
Multiple reagent strips provide semiquantitative urine protein grades corresponding to the concentrations listed below.

Dipstick protein concentrations

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Trace protein corresponds to 0.1 g/L.
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A 1+ result corresponds to 0.3 g/L.
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A 2+ result corresponds to 1.0 g/L.
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A 3+ result corresponds to 3.0 g/L.
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A 4+ result corresponds to 10.0 g/L.

Incidence in hospital practice

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The reported incidence of pre-eclampsia in hospital practice varies widely, from 5% to 15%.
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