학술논문
Ověření referenčního intervalu hodnot S100B a NSE - zavislosti na věku, době odběru a pohlaví
Ověření referenčního intervalu hodnot S100B a NSE - zavislosti na věku, době odběru a pohlaví : Verifying of S100B and NSE reference interval - age, gender and sampling time dependence
Verifying of S100B and NSE reference interval - age, gender and sampling time dependence
Ověření referenčního intervalu hodnot S100B a NSE - zavislosti na věku, době odběru a pohlaví : Verifying of S100B and NSE reference interval - age, gender and sampling time dependence
Verifying of S100B and NSE reference interval - age, gender and sampling time dependence
Document Type
Text
Author
Source
Klinická biochemie a metabolismus : časopis České společnosti klinické biochemie | 2007 Volume:15 | Number:3
Subject
Language
Czech
English
English
Abstract
Úvod a cíl: S100B protein a neuron specifická enoláza (NSE) jsou intenzivně zkoumané markery poškození CNS. Ověření referenční hodnot v séru a variability výsledků na čase odběru, pohlaví a věku jsou základní podmínky interpretace měřených hodnot. Matriál a metoda: Referenční interval jsme ověřili na 50 dobrovolnících, z nichž 10 mělo opakované odběry po 6 a 24 hodinách. Následně jsme analyzovali vliv věku, pohlaví, doby odběru na referenční meze, která byly stanoveny jako 95% percentil referenční skupiny. Výsledky a závěr: Zjistili jsem, že hodnoty NSE a S100B nevykazují klinicky významnou závislost na době odběru, pohlaví a věku. Hodnoty NSE mají vyšší variabilitu výsledků a cca 8 % vzorků muselo být vyloučeno z analýzy pro viditelnou hemolýzu. U S100B proteinu jsme zjistili vyšší horní referenční limit 0,2 μg/l, než je udávaný výrobcem; to však nemá zásadní klinický dopad na hodnocení výsledků.
Objective: S100B protein and neuron specific enolase (NSE) are nowadays intensively investigated as markers of central nervous system damage. Verification of reference values and result variability (biological) are basic conditions of results interpretation. Material and Methods: Reference intervals were verified on 50 volunteers, from them 10 had done repeatedly blood sampling after 6 and 24 hours from baseline. The influence of age, sex and time of sampling on reference cut offs were than analysed. Cut-offs were established as 95% percentile of marker level in analysed group. Results and conclusion: We found that, NSE and S100B levels do not show any clinically important dependence on the time of sampling, age and sex. NSE levels appear to have higher result variability and approximately 8% of samples had to be excluded from analysis due to visible haemolysis. We established a higher reference cut off for S100B – 0.2 μg/l, than manufacturer had set up, but it did not have any crucial effect on clinical evaluation of results.
Richard Pikner, Pavel Lavička, S. Kormuda
Lit. 28
Objective: S100B protein and neuron specific enolase (NSE) are nowadays intensively investigated as markers of central nervous system damage. Verification of reference values and result variability (biological) are basic conditions of results interpretation. Material and Methods: Reference intervals were verified on 50 volunteers, from them 10 had done repeatedly blood sampling after 6 and 24 hours from baseline. The influence of age, sex and time of sampling on reference cut offs were than analysed. Cut-offs were established as 95% percentile of marker level in analysed group. Results and conclusion: We found that, NSE and S100B levels do not show any clinically important dependence on the time of sampling, age and sex. NSE levels appear to have higher result variability and approximately 8% of samples had to be excluded from analysis due to visible haemolysis. We established a higher reference cut off for S100B – 0.2 μg/l, than manufacturer had set up, but it did not have any crucial effect on clinical evaluation of results.
Richard Pikner, Pavel Lavička, S. Kormuda
Lit. 28