Plasma electrolytes, which include sodium, potassium, chloride, calcium and magnesium, are among the most frequently measured blood analytes in clinical medicine. All are measured by ion-selective electrodes (ISE). ISEs are present not only in clinical laboratory instrumentation but also in blood gas analyzers and...

Arterial blood gas analysis is often perceived as one of the most difficult topics to be covered in the laboratory medicine curriculum, so many will welcome the promise contained in the title of this book, albeit with a degree of skepticism. They will not be disappointed. This excellent pocket-sized handbook, which...

Tight glycemic control (TGC) in the intensive care unit is essential to comprehensive clinical management.  However, TGC that is too aggressive in the wrong patient populations (particularly non-diabetics) can result in hypoglycemia, which brings with it a set of sequelae that can increase morbidity and mortality....

Clinical laboratory measurement of serum/plasma creatinine concentration has been used to assess patient kidney function for well over 50 years. With incorporation of creatinine analyses to blood gas and other point-of-care platforms the test is now available outside the laboratory, at the bedside and in the clinic.  ...

CONTEXT: Sensitive D-dimer assays have been developed to exclude the diagnosis of deep vein thrombosis (DVT) and have exhibited great success when used in conjunction with a diagnostic algorithm, including pretest probability scoring and a compression ultrasound (CUS). Improving specificity of D-dimer assays would...

In about 30-40 % of ischemic strokes, even after an extensive clinical investigation, it is not possible to determine any one etiology. It is possible that a fraction of these strokes, named cryptogenic, happen after an episode of paroxystic atrial fibrillation (AF) that was not registered. Strokes due to atrial...

PURPOSE – The purpose of this paper is to show how over the last 18 months Bolton Hospitals NHS Trust have been exploring whether or not lean methodologies, often known as the Toyota Production System, can indeed be applied to healthcare. DESIGN/METHODOLOGY/APPROACH – This paper is a viewpoint. FINDINGS – One’s...

Analytical methods are often developed at one site and transferred to other sites for routine use. Increasingly, the method development is made by manufacturers of instruments and reagents. Regulatory agencies have ruled that the responsibility for the performance of IVDs in the laboratories mainly should lie with...

One of the principal utilities of arterial blood gas (ABG) analysis is to help assess blood oxygenation status. The two ABG parameters used for this assessment are pO₂(a) (partial pressure of oxygen in arterial blood) and sO₂(a) (% of total hemoglobin that is saturated with oxygen). In health pO₂(a) is maintained...

When a new D-dimer method is to be implemented either as a substitute for a currently used D-dimer assay or as a supplement, maybe as a point-of-care assay, it is necessary to do a clinical comparison of the "old" assay versus the "new" assay. The major pitfalls in D-dimer comparisons are addressed in this paper.   ...