Umstead G S, Rosen J P
Clin Chem. 1979 Oct;25(10):1837-9.
Twenty children, five to 16 years old, diagnosed as having asthma, were studied to compare the serum concentrations of theophylline obtained by standard venipuncture with capillary concentrations obtained by finger lancet. The mean theophylline concentration in venous samples was 9.27 mg/L and in capillary samples was 9.26 mg/L. Comparison by the paired t-test showed no statistical difference between kinds of samples. When surveyed as to their preference, nine patients preferred the venous method, five the capillary method, and six had no preference.
对20名年龄在5至16岁、被诊断患有哮喘的儿童进行了研究，以比较通过标准静脉穿刺获得的血清茶碱浓度与通过手指采血获得的毛细血管浓度。静脉样本中的平均茶碱浓度为9.27mg/L，毛细血管样本中的平均茶碱浓度为9.26mg/L。配对t检验显示，不同样本之间无统计学差异。当询问他们的偏好时，9名患者更喜欢静脉采血法，5名更喜欢毛细血管采血法，6名无偏好。
