Publications (2)2.17 Total impact
Article: Application of five frozen human-pooled serum samples assigned by the International Federation of Clinical Chemistry and Laboratory Medicine reference procedure in a traceability investigation of gamma-glutamyltransferase catalytic concentration measurements in China.[show abstract] [hide abstract]
ABSTRACT: The in vitro directive of the European Union requires traceability to the international recommended reference procedures. The application of the reference procedures is necessary in order to evaluate the accuracy of gamma-glutamyltransferase (GGT) assays of routine measurement systems in China. Five frozen patient-pooled serum samples were assigned values by the International Federation of Clinical Chemistry and Laboratory Medicine (IFCC) reference procedure in order to evaluate the traceability of the results of GGT catalytic activity from six homogeneous systems. One of the serum samples was used to calibrate seven non-homogeneous systems. All of the homogeneous systems, except the Dade system (Dade Bering Inc, IL, USA), achieved traceability within the measurement range. The Roche and Hitachi systems were better than the other systems. After calibration, the variance of the non-homogeneous systems decreased dramatically from between 14.50% and 25.23% to between 1.25% and 3.09% and the bias decreased from between -11.4% and -4.1% to between 0.5% and 3.5%. Manufacturers in China should ensure that their calibration systems correspond to the IFCC reference procedures. Fresh frozen pooled patient serum assigned by reference laboratories can be used to calibrate non-homogeneous systems in order to achieve traceability.Annals of Clinical Biochemistry 04/2010; 47(Pt 3):189-94. · 2.17 Impact Factor
Article: Influence of abnormal cervical pap smear undertaken during pregnancy to the outcome of the pregnancy.[show abstract] [hide abstract]
ABSTRACT: To investigate the influence of abnormal cervical pap smear undertaken in pregnancy to the outcome of the pregnancy. A total of 1 069 primipara deliveried in Beijing Chaoyang hospital from Jan 1999 to May 2001 were reviewed, furthermore we compared the group of normal pap smear (group A) with the group of abnormal pap smear (group B), and analysed the difference of the complications during pregnancy, methods of delivery, the first stage of labor, fetal distress and the outcome of the cervical pap smear postpartum. The incidence of premature rupture of the membranes and fetal distress in group B, which were 39.39% and 30.30%, respectively, were significantly higher than that of group A, which were 5.21% and 15.25%, respectively (P < 0.01). There was no statistical difference in premature delivery, the ratio of cesarean section and the first stage of labor which were 3.38% and 3.03%, 44.11% and 30.30%, 7.3 h and 7.7 h, respectively (P > 0.05). The regression rate for patients with abnormal cervical pap smear postpartum was 62%. The outcomes of the pregnancy such as premature rupture of the membranes and fetal distress were affected by the abnormal cervical pap smear undertaken during pregnancy. It is important to undergo routine cervical pap smear examination during pregnancy.Zhonghua fu chan ke za zhi 07/2002; 37(7):388-90.