Rapid method for the quantitative determination of efavirenz in human plasma

2009 ◽  
Vol 49 (5) ◽  
pp. 1308-1312 ◽  
Author(s):  
Seloi Mogatle ◽  
Isadore Kanfer
Nature ◽  
1964 ◽  
Vol 203 (4947) ◽  
pp. 836-839 ◽  
Author(s):  
WILLIAM P. COLLINS ◽  
IAN F. SOMMERVILLE

1973 ◽  
Vol 19 (5) ◽  
pp. 492-495 ◽  
Author(s):  
M A Evenson ◽  
Susan Koellner

Abstract Rapid, accurate, and precise gas-chromatographic methods are reported for measurement of propoxyphene ("Darvon") in serum. A sample of 5 ml of serum is required for quantitation in blood after a therapeutic dose of 130-195 mg of propoxyphene; in cases of overdose of propoxyphene, only 1 ml of serum is required in a "toxic method" variation. Neither serum from healthy controls or from hospitalized patients contains interfering substances. Several commonly used analgesic and sedative drugs, added to a serum pool, also did not interfere. Day-to-day precision of the therapeutic method, as measured by the coefficient of variation (CV), is 7%; the CV for the method as applied to overdose cases is less than 3%. Propoxyphene added to serum could be about 86% accounted for analytically.


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