Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1983-2-14
pubmed:abstractText
Numerous studies report about the relationship between the clinical effectiveness of amitriptyline (At) and the plasma level of this drug and of its most important metabolite, nortriptyline (Nt). These agents are therefore very frequently examined for clinical applications and for research programmes in specialized laboratories. The experience with antiepileptic drugs suggests the necessity of quality controls for antidepressants also. Therefore, five institutions in Western Europe performed two such experiments within a year. Two kinds of blood samples were sent for analysis: 1. plasma samples spiked with different quantities of At and Nt from an untreated subject; 2. plasma samples from patients treated with clinical doses of At. Each laboratory happened to use a different analytical method: TLC, HPLC, GC-NPD, GC-FID and GC-MS. The results clearly show the usefulness and the necessity of quality controls for this category of drugs as well. They form the basis for the improvement of the methods of each laboratory in particular. In this context, intralaboratory quality controls are also possible, if one disposes of two different methods. The findings of this study suggest that published reports on relationships between clinical and pharmacological parameters should be considered critically as to possible methodological bias.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0720-4280
pubmed:author
pubmed:issnType
Print
pubmed:volume
15
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
156-60
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1982
pubmed:articleTitle
Quality control of amitriptyline and nortriptyline plasma level assessments: a multicenter study.
pubmed:publicationType
Journal Article