OBJECTIVE:To establish a method for the uncertainty evaluation of determining content of Lamivudine tablets by HPLC. METHODS:HPLC was established to determine the mathematical model of Lamivudine tablets contents,analyze the uncer-tainty sources in detail and evaluate each uncertainty components and combined uncertainty to obtain the expanded uncertainty. RE-SULTS:Uncertainty of Lamivudine tablets contents determined by HPLC was mainly from reference purity,weighing standard and glassware tolerance. Standard uncertainty was 0.21% and expanded uncertainty was 0.42%. The range of content determination was (99.76 ± 0.42)%,k=2. CONCLUSIONS:The method is suitable for uncertainty evaluation of Lamivudine tablets by HPLC,and provides reference for the quality control in laboratory and objective evaluation of Lamivudine tablets.

Ultrasonography examinations were performed for carotid atherosclerosis in 548 patients with type 2 diabetes mellitus (T2DM). Blood glucose, glycosylated hemoglobin, total serum bilirubin, uric acid, total cholesterol ( TC ), triglycerides ( TG), high-density lipoprotein (HDL), low-density lipoprotein (LDL) were measured. Total serum bilirubin level in T2DM patients without carotid atherosclerosis was (13.0±7. 1 )μmol/L, while that was (10. 9 ± 4. 9 )μmol/L in patients with carotid atherosclerosis (P ＜0. 01 ). The logistic analysis showed that total serum bilirubin level was negatively related to the presence of carotid atherosclerosis ( P ＜ 0. 05 ), which indicated that higher level of total serum bilirubin might be a protective factor for macroangiopathy in T2DM.

Objective:To investigate the effectiveness of probe-based near-infrared autofluorescence imaging (NIRAF) of the parathyroid gland.Methods:A total of 71 patients with thyroid cancer eligible for admission from May 4, 2023 to May 26, 2023 were selected, including 42 patients with thyroid cancer enrolled in the Department of Thyroid (hernia), Department of General Surgery, PLA General Hospital, including 29 females and 13 males, with a median age of 41 years, ranging from 21 to 76 years. A total of 29 patients with thyroid cancer were enrolled in the Department of Thyroid Surgery of Guangzhou First People’s Hospital, including 22 females and 7 males. The median age was 42.5 years, ranging from 24 to 72 years. The follow-up period was 1 month.Results:Among them, 196 suspicious parathyroid tissues were identified by the naked eye, and 207 suspicious parathyroid tissues were identified by probe NIRAF technology. Naked eye identification sensitivity, specificity and accuracy were 84.86%, 56% and 81.89%. The sensitivity, specificity and accuracy of parathyroid tissue identification by probe NIRAF were 92.66%, 80.00% and 90.53%, which were better than that of naked eye identification, and had a good coincidence rate with the results of immunocolloidal gold test or intraoperative freezing pathology (Kappa=0.61, P<0.001) . Conclusion:The probe-based NIRAF technique has a good ability to identify parathyroid tissue.