Adrenal disease

Exclusion Tests in Unilateral Primary Aldosteronism (ExcluPA) Study

J Clin Endocrinol MetabPublished Systematic review and meta-analysis of diagnostic accuracy studies

Authors' conclusion

The apparently high diagnostic accuracy of the CCT and the SIT was due to the selection of patients with an elevated ARR and thus a high pretest probability of unilateral PA; however, neither test furnished a diagnostic gain over the ARR. Therefore, the systematic use of these exclusion tests in clinical practice is not justified by available evidence.

Study context

Population
Patients tested for primary aldosteronism (PA) in studies meeting tight quality criteria, published 1970–2021 (PubMed, EMBASE, Web of Science, Cochrane Library)31 datasets
Participants
4,242 patients
Comparison
Exclusion tests vs aldosterone to renin ratio (ARR) for PA, with unilateral PA diagnosis as reference
Outcome
Pooled accuracy (summary AUROC) of exclusion tests vs unilateral PA diagnosis as reference
Methodological detailstwo-stage meta-analysis (exploratory and validation phase), PRISMA methodology
  • Two-stage meta-analysis (exploratory and validation phase)
  • PRISMA methodology

Pooled result

As reported in the abstract

Pooled accuracy (sAUROC)
GroupValueSummary area under the ROC curve (sAUROC)
ARR0.95 (95% CI 0.92–0.98)0.95
Captopril challenge test (CCT)0.92 (95% CI 0.88–0.97)0.92
Saline infusion test (SIT)0.96 (95% CI 0.94–0.99)0.96

Value

ARR0.95 (95% CI 0.92–0.98)
Captopril challenge test (CCT)0.92 (95% CI 0.88–0.97)
Saline infusion test (SIT)0.96 (95% CI 0.94–0.99)

Summary area under the ROC curve (sAUROC)

ARR0.95
Captopril challenge test (CCT)0.92
Saline infusion test (SIT)0.96

Original publication

Exclusion Tests in Unilateral Primary Aldosteronism (ExcluPA) Study. J Clin Endocrinol Metab. Published 14 November 2022. doi:10.1210/clinem/dgac654

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