A Clinical Assessment of Portable Point-of-care Testing for Quick Cortisol Assay During Adrenal Vein Sampling

Overview

Journal Sci Rep

Specialty Science

Date 2023 Dec 16

PMID 38104216

Authors

Ko Aiga

Mitsuhiro Kometani

Shigehiro Karashima

Seigo Konishi

Takuya Higashitani

Daisuke Aono

Xurong Mai

Mikiya Usukura

Takahiro Asano

Ayako Wakayama

Yuko Noda

Wataru Koda

Tetsuya Minami

Satoshi Kobayashi

Toshinori Murayama

Takashi Yoneda

Affiliations

Soon will be listed here.

Abstract

This study assessed the clinical performance of point-of-care testing (POCT) for quick cortisol assay (QCA) during adrenal vein sampling (AVS) using a newly invented portable quantitative assay instrument. An observational study was conducted prospectively at two centres in Japan. Forty-eight patients with primary aldosteronism considered for adrenalectomy were enrolled in this study and underwent AVS. Three basal adrenal vein samples from each adrenal vein and two from the inferior vena cava were collected sequentially. The cortisol concentration of adrenal vein samples was measured by routine method and QCA. A total of 338 adrenal vein samples were analysed from 250 sites to determine AVS success or failure. The distribution of turnaround time of the QCA for AVS success or failure followed a normal distribution with an average of 20.5 min. A positive correlation between the routine method and QCA was observed regarding cortisol concentration or selectivity index. No significant difference between the two methods was observed regarding the success rate of AVS. Using the routine method as a reference, the sensitivity and specificity of AVS success or failure were 99.1% (210/212) and 81.6% (31/38), respectively. Easy, quick, portable, and precise POCT-QCA demonstrated its compatibility with routine methods regarding clinical performance.

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