Objective To adopt 5 kinds of platelets aggregation function analyzer to explore and study the reliable method for detecting the platelets aggregation function and accurate parameters .Methods The platelets aggregation function in the control group and the single clopidogrel group was simultaneously detected by utilizing the ADP induced light turbidimetric platelet aggre‐gation analyzer (LTA) test ,flow cytometry for PAC‐1(receptor of Fg ,Ca2+ ,GPⅡb/Ⅲa forming complex) and CD62p(P selectin) activation percentage detection test ,Innova PL‐11 for platelets analysis test ,VerifyNow anti‐platelet therapy monitoring system and thrombelastogram(TEG) .Results (1)The 6‐parameter differences of ADP% ,PAC‐1 and CD62p receptor activation percentage ac‐tivated by ADP ,MAR% ,INHI% ,ADP induced MA value(mm) detected by TEG had statistical differences between the control group and the case group(P< 0 .05);PRU of BASE and P2Y12 receptor ,thrombin induced MA value (mm) had no statistical differences between these two groups(P>0 .05) .(2)ADP% was positively correlated with (100‐INHI)% ,MAR% ,ADP activated CD62p and PAC‐1 receptor activation percentage(r=0 .565 ,0 .939 ,0 .769 ,0 .583 ,P<0 .05 );while which had no correlation with ADP induced platelets aggregation value(% Agg) detected by TEG(r=0 .794 ,0 .715 ,0 .889) .Conclusion (1)Clopidogre has the anti‐platelets effect .(2)LTA is easily operating ,cheap and stable in detection results ,has high popularizing rate in hospitals and is the first option method for clinically monitoring the platelets aggregation function .

Objective To detect the antiplatelet function of clopidogel by Thrombelastography (TEG)and light transmmi-tance aggregometry (LTA)and analyze efficiency of two methods.Methods ①Venous blood samples were taken from 48 outparients and inpatient with acute corotary syndrome (ACS)in PLA General Hospital,including unstable anqina,ST seg-ment elevation myocardial infarction and non ST segment elevation myocardial infarction (32 males,16 females)by random number table from March to July 2011,whose average age was 73 (62~90).②All of them were served 160 mg aspirin and 300 mg clopidogrel after they were in hospital at first time,and then served with 75 mg/d clopidogrel for 9 months.After that,venous blood samples were drew from them who were served clopidogrel 2 hours later.③Platelet aggregation function was assayed with LTA and TEG.All volunteers were signed informed consent and the experiment was approved by the hos-pital ethics committee.Results The platelet aggregation rate detected with LTA induced by adenosine diphosphate (ADPL-TA-INDU)was 40~80% in 41 individuals (85.4%),>80% in 7 individuals (14.6%),coefficient of variation (CV)was 0.19.The inhibition ration of platelet function (INHI)detected with TEG (ADPTEG-INHI)was 10~60% in 40 individu-als (83.3%),<10% in 2 individuals (4.2%),>60 in 6 individuals (12.5%),CV was 0.54.The sum of ADPLTA-INDU and ADPTEG-INHI (ADPLTA-INDU+ADPTEG-INHI)tended to a constant (Mean=98%,SD=12.1).There was no significant indifference between every (ADPLTA-INDU+ADPTEG-INHI)and their Mean (98%)by paired t-test.The ADPLTA-INDU was negative correlated with ADPTEG-INHI (r=-0.75,P<0.01).Conclusion The effect of clopidogrel was mild and the efficiency of TEG and LTA was similar in detecting the antiplatelet function of clopidogrel,but the preci-sion of TEG was lower than LTA.