RESUMEN
Objective To evaluate and select the dilution for high blood and urinary amylase among wet chemical & dry chemical de‐tection system ,hope to screen the optimum dilution for different measurement system and specimen type .Methods Pure water (H2 O) ,nor‐mal saline (NS) ,7% bovine serum albumin(7% BSA) ,low amylase specimen of serum and urine selected as candidate dilution .The high amylase specimen was diluted ,then was measured among wet chemical analyzer and dry chemical analyzer ,then the bias and correlation was evaluated according to the professional standard of National health and family planning commission of china .Results For high amylase ser‐um specimen ,the same dilution resulted in different bias between two detecting system .The bias of H2 O ,7% BSA and low amylase serum were less than the TEa (total error allowance) regulated by professional standard in wet chemical analyzer .Of them ,the low amylase serum was the best .In dry chemical analyzer ,the bias of H2 O ,NS and low amylase serum were no less than the professional standard .Of them ,NS was the best .For high amylase urine specimen ,the bias of H2 O and low amylase urine were less than the professional standard in wet chem‐ical analyzer ,and the low amylase urine was the best .In dry chemical analyzer ,only the bias of low amylase urine met the requirement of professional standard .The evaluation of linearity indicated that NS was unfit to the dilution for high amylase serum in wet chemical analyzer and for high amylase urine in dry chemical analyzer ,7% BSA was unsuitable to be the dilution for high amylase serum .Conclusion The effect of same dilution on different detecting system is different .The most suitable dilution is low amylase serum and urine for high amylase serum and urine specimen respectively in wet chemical analyzer ,and the suitable dilution is NS and low amylase urine respectively in dry chemical analyzer .