Precision and accuracy of a HPLC method for measurement of fecal porphyrin concentrations.
Clin Chem Lab Med
; 40(10): 1036-9, 2002 Oct.
Article
in En
| MEDLINE
| ID: mdl-12476945
ABSTRACT
We studied precision and accuracy of a HPLC method for determination of porphyrins in feces. A commercial standard solution appeared to contain less coproporphyrin (15%) than stated by the manufacturer. The between-batch coefficients of variation were often below 15% and were higher than the within-batch coefficients. The precision of porphyrin measurements was not influenced by the type of porphyria. Recoveries of added coproporphyrin and protoporphyrin were 90% and 108%; coefficients of variation were 6% and 19%, respectively.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Porphyrias
/
Porphyrins
/
Feces
Type of study:
Diagnostic_studies
Limits:
Humans
Language:
En
Journal:
Clin Chem Lab Med
Journal subject:
QUIMICA CLINICA
/
TECNICAS E PROCEDIMENTOS DE LABORATORIO
Year:
2002
Document type:
Article
Affiliation country:
Países Bajos