2021
The ALT upper reference interval debate: Blame it on the alcohol
Vera MA, Koch CD, Liapakis A, Lim JK, El-Khoury JM. The ALT upper reference interval debate: Blame it on the alcohol. Clinica Chimica Acta 2021, 526: 62-65. PMID: 34973184, DOI: 10.1016/j.cca.2021.12.026.Peer-Reviewed Original ResearchConceptsUpper reference limitAdult groupHigher upper reference limitLiver diseasePediatric groupPediatric GastroenterologyPediatric populationClinical guidelinesALT valuesAmerican CollegeDerivation studyAge groupsReference limitsNorth American SocietyAmerican SocietyClinical laboratoriesRoche Cobas 8000GastroenterologyLaboratory expertsWomenCobas 8000MenGroupVariable inclusionIndividualsPreventing pseudohyponatremia: Intralipid®-based lipemia cutoffs for sodium are inappropriate
Koch CD, Vera MA, Messina J, Price N, Durant TJS, El-Khoury JM. Preventing pseudohyponatremia: Intralipid®-based lipemia cutoffs for sodium are inappropriate. Clinica Chimica Acta 2021, 520: 63-66. PMID: 34077753, DOI: 10.1016/j.cca.2021.05.032.Peer-Reviewed Original ResearchConceptsHyperlipidemic samplesIndirect ion-selective electrode methodSodium concentrationHuman samplesIndirect ISE methodPatient plasma samplesPseudohyponatremiaRoche CobasMajor contributing factorExcess lipidsIntralipidPlasma samplesBeckman CoulterHyperlipidemiaLipemic indexArtifactual decreaseClinical laboratoriesRoche Cobas 8000LipemiaIon selective electrode methodDirect ISEIndirect ISECobas 8000Contributing factorStrong positive correlation
2016
Comparison of symmetric dimethylarginine with creatinine, cystatin C and their eGFR equations as markers of kidney function
El-Khoury JM, Bunch DR, Hu B, Payto D, Reineks EZ, Wang S. Comparison of symmetric dimethylarginine with creatinine, cystatin C and their eGFR equations as markers of kidney function. Clinical Biochemistry 2016, 49: 1140-1143. PMID: 27452178, DOI: 10.1016/j.clinbiochem.2016.07.009.Peer-Reviewed Original ResearchConceptsGlomerular filtration rateKidney functionCystatin CEGFR equationsWidespread clinical useIothalamate clearanceEGFR formulasFiltration rateSymmetric dimethylargininePlasma specimensAdult populationStrong markerAbstractTextClinical useEndogenous markerCreatinineLiquid chromatography-tandem mass spectrometry methodChromatography-tandem mass spectrometry methodFurther studiesDimethylarginineRoche Cobas 8000MarkersCatabolic productsCobas 8000