PMID- 36787561 OWN - NLM STAT- MEDLINE DCOM- 20230216 LR - 20230216 IS - 1433-6510 (Print) IS - 1433-6510 (Linking) VI - 69 IP - 2 DP - 2023 Feb 1 TI - Analytical Evaluation and Reference Interval Investigation for Chinese Han Population in Wuhan of CA72-4 Performed on an Architect i2000sr System. LID - 10.7754/Clin.Lab.2022.220432 [doi] AB - BACKGROUND: Carbohydrate antigen 72-4 (CA72-4) is a mucin-like, tumor-associated glycoprotein. Its elevation in serum has been found to be associated with various carcinomas. The purpose of this study was to evaluate the analytical performance of the Architect chemiluminescent immunoassay CA72-4 on the Architect i2000sr platform and to determine the reference interval (RI) of CA72-4 for the Chinese Han population in the city of Wuhan. METHODS: We evaluated the precision, analytical sensitivity, linearity and interference according to the guidelines of the Clinical Laboratory Standardization Institute. Additionally, the Abbott Architect i2000sr CA72-4 assay was compared to the Roche Cobas E602 CA72-4 assay. A total of 448 healthy individuals were selected to determine the RIs of CA72-4. RESULTS: The assay had an imprecision of 1.38% - 2.63% within runs, 1.41% - 2.73% between runs and a total imprecision of 2.54% - 4.10%. The limit of blank, limit of detection and limit of quantitation concentrations were 0.19 U/mL, 0.21 U/mL, and 0.21 U/mL. Linearity was confirmed across the entire measurable range. Additionally, the carryover was less than 0.065%. Interferences with hemoglobin, conjugated bilirubin and lipemia were acceptable with changes of less than 10%. A correlation coefficient of 0.9450 was determined through the method comparison experiment (95% CI 0.9318 - 0.9557). The RI for serum CA72-4 in the Han population was established as an upper limit, 11.13 U/mL (90% CI 9.39 - 12.99) by using the Abbott Architect i2000sr system. CONCLUSIONS: This study establishes a RI for the Chinese Han population in Wuhan using the Abbott Architect i2000sr CA72-4 assay and demonstrates an analytical performance for clinical use. FAU - Deng, Lingyan AU - Deng L FAU - Li, Huijun AU - Li H FAU - Wang, Xu AU - Wang X FAU - Yin, Tongxin AU - Yin T FAU - Cheng, Liming AU - Cheng L LA - eng PT - Journal Article PL - Germany TA - Clin Lab JT - Clinical laboratory JID - 9705611 RN - 0 (CA-72-4 antigen) RN - 0 (Antigens, Tumor-Associated, Carbohydrate) SB - IM MH - Humans MH - *Carcinoma/diagnosis MH - East Asian People MH - Immunoassay/methods MH - Immunologic Tests MH - *Antigens, Tumor-Associated, Carbohydrate/blood EDAT- 2023/02/15 06:00 MHDA- 2023/02/17 06:00 CRDT- 2023/02/14 16:46 PHST- 2023/02/14 16:46 [entrez] PHST- 2023/02/15 06:00 [pubmed] PHST- 2023/02/17 06:00 [medline] AID - 10.7754/Clin.Lab.2022.220432 [doi] PST - ppublish SO - Clin Lab. 2023 Feb 1;69(2). doi: 10.7754/Clin.Lab.2022.220432.