Approach on Potassium in Detecting Serum and Heparin Anticoagulative Plasma by Electrode and Enzymic Method
Zhuang Yi-hong · Medical Laboratory Sciences · 2003
Objective The purpose is to compare the difference of potassium in detecting serum and heparin anticoagulate plasma by electrode and enzymic method. Studying the feasibility of detecting potassium with heparin anticoagulate plasma. Methods Using Hitachi 7170A full-automatic biochemical analysic device,Beckman CX3 biochemical device,MEDICA K/Na/Cl to detect 50 patient's serum and heparin anticoagulate plasma. Results The potassium in serum was nearly the same as in plasma by electrode method,while there was different (P0. 01) by enzymic method. The regression equation of potassium in serum and in plasma was y=1. 007X+0. 23,r = 0. 998. Conclusion The result of detecting potassium by electrode method in serum is nearly the same as in plasma,therefore heparin anticoagulate plasma is appropriate to detecting potassium by electrode. But there is constant difference (about 0. 24mmol/L) in testing potassium by enzymic method, which should be corrected.