Comparison of radioimmunoassay results in serum and plasma.

The protocol of the experiment was designed as follows. In the morning, the instrument was prepared for operation by calibration and verification with whole blood gas control samples (Quantra; Dade Division of American Hospital Supply Corp., Miami, FL 33152). An IL blood gas control, ContrIL, was analyzed for P02 before and after the determination on blood from the patient in surgery. Two levels of IL blood gas controls (Normal ContrlL and Alkalosis ContrlL) were used in this study and the reproducibility of each was determined. The mean value for 18 results for Normal ContrlL was 96.3 mrnHg (SD 0.93),with a CV of 1%.The mean value for 19 results for Alkalosis ContrlL was 146.3 (SD 0.96) mmHg, with a CV of 0.7%. Table 1 shows the analytical results for 25 paired (before and after) control samples from seven patients. We did 18 single analyses on control samples immediately after blood samples containing various levels of halothane. All data inTable 1 were obtained by using a single p02 electrode. The results demonstrate that there was no significant halothane carryover effect with the P02 electrode in the IL 813 blood gas analyzer.