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July 2019
Preanalytic error in plasma/serum glucose measurement examined
Accurate estimation of in vivo blood glucose concentration is potentially compromised by in vitro glycolysis, the temperature- and time-dependent enzymatic metabolism of glucose by blood cells after blood is removed from the body.
For more than 40 years it was recommended that in order to avoid the potential problem ...
Preanalytical phase
Process optimization
Glucose
Journal Scan
July 2019
Challenging the dogma that severe hypercalcemia is life threatening
In health, plasma total calcium concentration is maintained within the approximate reference interval: 2.20-2.60 mmol/L (8.8-10.4 mg/dL), so that hypercalcemia (increased blood calcium) is defined as plasma total calcium greater than 2.60 mmol/L (10.4 mg/dL). The two most common causes of hypercalcemia are malignant...
Electrolytes
Journal Scan
June 2019
Blood test results during normal pregnancy and pregnancy-related illness
Pregnancy is associated with significant anatomical and physiological change in order to both accommodate and sustain the developing fetus. As this literature review article written by two Australian obstetricians makes clear, pregnancy-associated physiological change affects the blood concentration of a range of...
Kidneys/fluids
Blood gases/acid-base
Process optimization
Electrolytes
Journal Scan
May 2019
A tool for evaluating point-of-care tests
One of the most significant developments in laboratory medicine over the past few decades has been application of point-of-care testing (POCT). Technological advance allows an ever-increasing repertoire of in vitro diagnostic and monitoring tests to be performed outside the laboratory, at the patient’s bedside, in the ...
Point-of-care testing
Information management
Process optimization
Journal Scan
May 2019
Is increased blood oxygen (pO2(a)) harmful – the potential adverse effect of oxygen therapy reviewed
One of the utilities of arterial blood gas analysis (BGA) is to assess patient blood oxygenation status. The two principal parameters generated during BGA that allow this assessment are: partial pressure of oxygen in arterial blood (pO2(a)) and the percentage of functional hemoglobin in arterial blood that is...
Blood gases/acid-base
Journal Scan
April 2019
Accurate assessment of calcium status in the critically ill requires measurement of ionized calcium rather than total calcium
Disturbance of blood calcium concentration is a common feature of many critical illnesses; prevalence studies suggest for example that 50-85 % of patients admitted to intensive/critical care have some degree of hypocalcemia (reduced blood calcium concentration). So monitoring and correction of blood calcium, where...
Point-of-care testing
Electrolytes