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- Title
Effects of a Serum Heating Procedure for Inactivating COVID-19 on Common Biochemical Tests.
- Authors
Jia Zhao; Fei Li; Bo Yuan; Weixin Li; Jian Gao; Xiaopeng Hu; Yawen An; Zhiyong Liu; Zhiwen Li; Hanqing Liu; Shuo Song; Jianchun Wang
- Abstract
Background: COVID-19 has recently been declared an epidemic by the WHO, and there is an urgent need for affected countries and laboratories to assess and treat people at risk of COVID-19. A heat procedure has been suggested for specimen inactivation. This study was designed to evaluate the effect of serum heating on biochemical indexes, and providing a basis for accurate detection results of the COVID-19 patients. Methods: We collected 29 normal cases of two tubes of 5 mL whole blood. One tube was analyzed directly, and the other was analyzed after heating at 56°C 30 minutes. Results: A total of 34 serum biochemical index quantitative results were obtained, 28/34 indexes were not significantly affected by the heat inactivation and remained clinically interpretable. As the thermal inactivation for these indexes showed good correlation, ALB (p = 0.04, Pearson R = 0.91, 2.6% mean increase), CysC (p = 0.03, Pearson R = 0.98, 9.9% mean increase), CO2CP (p < 0.001, Pearson R = 0.96, 13% mean decrease), they were still interpretable. Four biochemical indexes ALP, CK, CK-MB, and insulin were inactivated and showed significant statistical differences (p < 0.001). Conclusions: Our study showed CK, CK-MB, ALP, and insulin were sensitive to heat and will be inhibited or degrade after heating, indicating that the rapid decrease of this indexes in the COVID-19 patients may be caused by sample heat inactivation. For safety and diagnostic accuracy, we recommend the use of a point-of-care device for blood gases, electrolytes, troponin, and liver and renal function tests within a ISL 2 or above biosafety cabinet with level 3 or above biosafety laboratory practice.
- Subjects
COVID-19; LIVER function tests; BLOOD gases; PHYSIOLOGICAL effects of heat
- Publication
Clinical Laboratory, 2021, Issue 2, p1
- ISSN
1433-6510
- Publication type
Article
- DOI
10.7754/Clin.Lab.2020.200743