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Evaluation of the in vitro stability of direct oral anticoagulants in blood samples under different storage conditions
Scandinavian Journal of Clinical and Laboratory Investigation ( IF 1.3 ) Pub Date : 2021-07-18 , DOI: 10.1080/00365513.2021.1946844
Katharina Thuile 1 , Katia Giacomuzzi 1 , Erika Jani 1 , Peter Marschang 2 , Thomas Mueller 1
Affiliation  

Abstract

In this study, we evaluated the in vitro stability of direct oral anticoagulants (DOACs) in blood samples of 57 patients under different storage conditions using functional coagulation assays. We determined the analyte concentrations (1) immediately after blood collection (baseline); (2) after storage of citrated whole blood (agitated) at room temperature and citrated plasma at room temperature and at 4 °C for 4, 8, and 24 h, respectively; and (3) after storage of citrated plasma at −20 °C for 30, 60, and 90 days. According to the concept of acceptable change limits (ACL), analytes were considered stable if the mean relative analyte recovery at a given time was >78%. The mean baseline values (range) of dabigatran, rivaroxaban, apixaban, and edoxaban were 115 ng/mL (62–217), 129 ng/mL (31–215), 156 ng/mL (49–362), and 101 ng/mL (33–283), respectively. After applying the analyte stability limit, all four DOACs were stable for 24 h at room temperature and at 4 °C. The mean recovery after 24 h was 102–111% for dabigatran, 88–97% for rivaroxaban, 95–98% for apixaban, and 90–96% for edoxaban. When plasma samples were stored at −20 °C, the mean percentage deviation after 90 days for all four DOACs was ≤10%, even after three freeze-thaw cycles. Thus, for the correct determination of DOAC plasma concentrations, blood samples do not have to be analyzed immediately and can be stored at room temperature for up to 24 h before analysis. In clinical practice, blood sample transport and storage for DOAC measurements appear to be unproblematic.



中文翻译:

不同储存条件下血样中直接口服抗凝剂的体外稳定性评价

摘要

在这项研究中,我们评估了体外使用功能性凝血测定法对 57 名患者在不同储存条件下的血液样本中直接口服抗凝剂 (DOAC) 的稳定性。我们在采血后立即测定分析物浓度 (1)(基线);(2) 将柠檬酸全血(搅拌)在室温和柠檬酸血浆在室温和 4°C 分别储存 4、8 和 24 小时后;(3) 柠檬酸盐血浆在-20°C 下储存 30、60 和 90 天后。根据可接受变化限度 (ACL) 的概念,如果在给定时间的平均相对分析物回收率 >78%,则认为分析物是稳定的。达比加群、利伐沙班、阿哌沙班和依度沙班的平均基线值(范围)分别为 115 ng/mL (62–217)、129 ng/mL (31–215)、156 ng/mL (49–362) 和 101 ng /mL (33–283),分别。应用分析物稳定性限值后,所有四种 DOAC 在室温和 4 °C 下均稳定 24 小时。达比加群 24 小时后的平均恢复率为 102-111%,利伐沙班为 88-97%,阿哌沙班为 95-98%,艾多沙班为 90-96%。当血浆样品在 -20 °C 下储存时,所有四种 DOAC 在 90 天后的平均百分比偏差≤10%,即使在三个冻融循环后也是如此。因此,为了正确测定 DOAC 血浆浓度,不必立即分析血样,并且可以在分析前在室温下储存长达 24 小时。在临床实践中,用于 DOAC 测量的血样运输和存储似乎没有问题。阿哌沙班为 95-98%,艾多沙班为 90-96%。当血浆样品在 -20 °C 下储存时,所有四种 DOAC 在 90 天后的平均百分比偏差≤10%,即使在三个冻融循环后也是如此。因此,为了正确测定 DOAC 血浆浓度,不必立即分析血样,并且可以在分析前在室温下储存长达 24 小时。在临床实践中,用于 DOAC 测量的血样运输和存储似乎没有问题。阿哌沙班为 95-98%,艾多沙班为 90-96%。当血浆样品在 -20 °C 下储存时,所有四种 DOAC 在 90 天后的平均百分比偏差≤10%,即使在三个冻融循环后也是如此。因此,为了正确测定 DOAC 血浆浓度,不必立即分析血样,并且可以在分析前在室温下储存长达 24 小时。在临床实践中,用于 DOAC 测量的血样运输和存储似乎没有问题。血样不必立即分析,分析前可在室温下保存长达 24 小时。在临床实践中,用于 DOAC 测量的血样运输和存储似乎没有问题。血样不必立即分析,分析前可在室温下保存长达 24 小时。在临床实践中,用于 DOAC 测量的血样运输和存储似乎没有问题。

更新日期:2021-07-18
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