2023
Heidenhain variant of Creutzfeldt-Jakob disease masquerading as neuromyelitis optica spectrum disorder: recognizing when apheresis is not the answer
Burke O, Jacobs J, Tormey C, Rinder H, Villalba C, Lee E, Campos J, Abels E, Yurtsever N. Heidenhain variant of Creutzfeldt-Jakob disease masquerading as neuromyelitis optica spectrum disorder: recognizing when apheresis is not the answer. Lab Medicine 2023, 55: 520-523. PMID: 38142129, DOI: 10.1093/labmed/lmad107.Peer-Reviewed Original ResearchNeuromyelitis optica spectrum disorderCreutzfeld-Jakob diseaseOptica spectrum disorderHeidenhain variantBilateral vision lossTherapeutic plasma exchangeReal-time quaking-induced conversionCreutzfeldt-Jakob diseaseImmunosuppressive therapyVisual disturbancesPlasma exchangeNeurocognitive symptomsTreatment modalitiesVision lossHospice careSpectrum disorderRare formPreliminary diagnosisDiseaseDiagnosisDisordersEarly stagesPatientsApheresisTherapy
2022
A preliminary study of hydrocodone and hydromorphone to oxycodone ratios for distinguishing impurities from independent opioid use
Choucair I, Villalba C, Vera M, Cassella-Mclane G, Durant T, El-Khoury J. A preliminary study of hydrocodone and hydromorphone to oxycodone ratios for distinguishing impurities from independent opioid use. Clinical Biochemistry 2022, 112: 6-10. PMID: 36535386, DOI: 10.1016/j.clinbiochem.2022.12.009.Peer-Reviewed Original ResearchConceptsConcentrations of hydrocodoneMean ratioOxycodone pillsPrescription complianceOpioid useUDT resultsMedication recordsOxycodoneAdditional opiatesPatientsHydromorphoneLarger sample sizeAbstractTextHydrocodoneDrug abuseLiquid chromatography-tandem mass spectrometryDrug testingChromatography-tandem mass spectrometryLC-MS/MSFurther validationPreliminary studySample sizeOpiatesSensitive methodPills