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2. Errors due to heparin in the estimation of plasma sodium and potassium concentrations. Shek CC, Swaminathan R. Intensive Care Med; 1985; 11(6):309-11. PubMed ID: 4086706 [Abstract] [Full Text] [Related]
4. Interference from heparin ... in the measurement of plasma sodium on ion selective electrodes. Swaminathan R. Ann Clin Biochem; 1987 Jan; 24 ( Pt 1)():116-7. PubMed ID: 3827180 [No Abstract] [Full Text] [Related]
5. Calibration of direct ion-selective electrodes for plasma Na+ to allow for the influence of protein concentration. Broughton PM, Smith SC, Buckley BM. Clin Chem; 1985 Oct; 31(10):1765-6. PubMed ID: 4042345 [No Abstract] [Full Text] [Related]
7. Clinical evaluation of sodium ion selective field effect transistors for whole blood assay. Thompson JM, Smith SC, Cramb R, Hutton P. Ann Clin Biochem; 1994 Jan; 31 ( Pt 1)():12-7. PubMed ID: 8154847 [Abstract] [Full Text] [Related]
8. [Effects of heparin lithium in the capillary method of blood specimen collection]. Umeda S, Kitamura Y, Terahata K. Igaku To Seibutsugaku; 1971 Feb 10; 82(2):63-6. PubMed ID: 5165286 [No Abstract] [Full Text] [Related]
9. Determination of sodium and potassium with ion-selective electrodes. Fogh-Andersen N, Wimberley PD, Thode J, Siggaard-Andersen O. Clin Chem; 1984 Mar 10; 30(3):433-6. PubMed ID: 6697490 [Abstract] [Full Text] [Related]
10. Effect on 16 analytes of overnight storage of specimens collected into heparinised evacuated tubes with plasma separator. Bailey IR. Ann Clin Biochem; 1990 Jan 10; 27 ( Pt 1)():56-8. PubMed ID: 2135631 [Abstract] [Full Text] [Related]
11. Benzalkonium interference with test methods for potassium and sodium. Koch TR, Cook JD. Clin Chem; 1990 May 10; 36(5):807-8. PubMed ID: 2337994 [Abstract] [Full Text] [Related]
12. [Evaluation of enzymatic methods for the determination of plasma sodium and potassium using the Hitachi 747 analytic system]. Pei P, Cigler C, Vonderschmitt DJ. Schweiz Med Wochenschr; 1991 Dec 14; 121(50):1883-6. PubMed ID: 1759149 [Abstract] [Full Text] [Related]
13. Ion-selective electrodes for sodium and potassium: a new problem of what is measured and what should be reported. Maas AH, Siggaard-Andersen O, Weisberg HF, Zijlstra WG. Clin Chem; 1985 Mar 14; 31(3):482-5. PubMed ID: 3971572 [Abstract] [Full Text] [Related]
17. [Use of heparinized tubes for collection of blood intended for chemical analysis, especially for potassium determination]. Michod J, Platsoukas C, Frei J. Z Klin Chem Klin Biochem; 1970 Sep 08; 7(5):455-7. PubMed ID: 5505954 [No Abstract] [Full Text] [Related]