Patient Samples as Controls

Using Mixtures of Biological Samples as Genome-Scale Process Controls

Long-term stabilized blood samples as controls for flow cytometric HLA-B27 screening: a feasibility study.

BACKGROUND Long-term stabilized blood samples are potentially useful as positive or negative procedure controls for flow cytometric HLA-B27 screening, and could serve as test samples in an external quality assessment (EQA) scheme. We evaluated long-term stabilized whole blood specimens as prepared for the UK NEQAS for Leucocyte Immunophenotyping EQA scheme (Sheffield, UK). METHODS Peripheral ...

Comparison of Serum Levels of Magnesium and Potassium in Stroke Patient and Healthy Controls

Background & Objectives: CVA (cerebrovascular accident) is the most common debilitating disease. Studies show that magnesium and potassium have significant neuroprotective effects. The aim of this study is evaluation of serum levels of potassium and magnesium in stroke patients. Materials & Methods: In this case study, 70 stroke patients were entered in following manner. For a patient, a questi...

Gingival Tissue Samples and Patient Selection

Spot sputum samples are at least as good as early morning samples for identifying Mycobacterium tuberculosis

BACKGROUND The use of early morning sputum samples (EMS) to diagnose tuberculosis (TB) can result in treatment delay given the need for the patient to return to the clinic with the EMS, increasing the chance of patients being lost during their diagnostic workup. However, there is little evidence to support the superiority of EMS over spot sputum samples. In this new analysis of the REMoxTB stud...