Shapiro B A, Cane R D, Kavanaugh J
Intensive Care Med. 1983;9(2):83-5. doi: 10.1007/BF01699262.
The difference between serum and plasma electrolyte measurements and the effects of delay, cooling and addition of sodium heparin on plasma electrolyte measurements were observed. Delay of more than 30 min from sampling to analysis renders plasma potassium measurements unreliable. All other factors assessed produced no changes in plasma electrolyte measurements. Arterial blood gas laboratories can, therefore, reliably provide rapid or serial measurements of plasma sodium and potassium provided the analysis is performed within 30 min of obtaining an appropriate arterial blood sample.
观察了血清和血浆电解质测量之间的差异，以及延迟、冷藏和添加肝素钠对血浆电解质测量的影响。从采样到分析延迟超过30分钟会使血浆钾测量结果不可靠。评估的所有其他因素对血浆电解质测量均无影响。因此，只要在获取合适的动脉血样本后30分钟内进行分析，动脉血气实验室就能可靠地提供血浆钠和钾的快速或系列测量结果。
