PT  - JOURNAL ARTICLE
AU  - Hyerim Kim
AU  - Soeun Jeon
AU  - Sun Hack Lee
AU  - Hyun-Su Ri
AU  - Hyeon-Jeong Lee
AU  - Jeong-Min Hong
AU  - Sung In Paek
TI  - False-positive Xpert<sup>®</sup> Xpress SARS-CoV-2 assay in an emergency room and trauma center
AID  - 10.15537/smj.2022.43.8.20220317
DP  - 2022 Aug 01
TA  - Saudi Medical Journal
PG  - 965--970
VI  - 43
IP  - 8
4099  - http://smj.org.sa/content/43/8/965.short
4100  - http://smj.org.sa/content/43/8/965.full
SO  - Saudi Med J2022 Aug 01; 43
AB  - Objectives: To review reports false-positive Xpert results in an emergency room and trauma center.Methods: Patients’ data with false-positive Xpert results from November 2020 to February 2022 at Pusan National University Hospital, Busan, Republic of Korea, were extracted from the electronic medical records.Results: The positive predictive value of Xpert was 40%. Of the 12 patients with false-positive results, 5 (41.7%) were re-positives (such as, patients recovered from coronavirus disease-19 [COVID-19]), and 4 (33.3%) had head or facial trauma. Two out of 4 head or facial trauma cases had documented sample contamination with blood.Conclusion: We found a high incidence of false-positive Xpert results among patients who recovered from COVID-19 and those with head or facial injury. Careful history taking for COVID-19 and physical examination of the sample collection site is essential before Xpert analysis.