RT Book, Section
A1 Laposata, Michael
A1 McCaffrey, Peter
SR Print(0)
ID 1187001255
T1 Methods in Clinical Chemistry and General Methods
T2 Clinical Laboratory Methods: Atlas of Commonly Performed Tests
YR 2022
FD 2022
PB McGraw Hill, LLC
PP New York, NY
SN 9781260470284
LK accessmedicine.mhmedical.com/content.aspx?aid=1187001255
RD 2024/04/19
AB The  concentrations  of  the  major  electrolytes  in  venous  plasma  or  serum  can  be  determined  using  ion-selective  electrodes  for  each  one.  The  major  ones  are  sodium  (Na),  potassium  (K),  and  chloride  (Cl).  A  major  preanalytical  error  involves  aggressive  handling  of  the  tube  (shaking  instead  of  gentle  inversion)  prior  to  analysis.  It  is  frequently  manifested  by  an  artifactually  high  value  for  potassium.  Ionized  or  free  calcium,  not  bound  to  protein,  can  also  be  measured  using  an  electrode  specific  for  calcium.