A specimen for clinical laboratory testing must be properly collected from the correct patient at the correct time with proper patient preparation, and the right test must be performed for answering the right question. Quality in the preanalytical phase of laboratory activity can be assured by implementing a quality...

To assess anemia and reduced oxygen-carrying capacity, a measurement of hematocrit and/or hemoglobin is performed. Whether hemoglobin or hematocrit is preferred depends on different needs and is often determined by tradition.  Both hematocrit and hemoglobin are important hematology parameters for diagnosing...

Disturbance of the mechanisms which maintain normal blood pH is a defining feature of diabetic ketoacidosis (DKA), an acute and life-threatening complication of the chronic metabolic disease, diabetes.  For this reason diagnosis and monitoring of DKA invariably include measurement of arterial blood gases. This...

Optimizing all the steps in the testing cycle is as crucial to the success of point-of-care testing (POCT) as the measurement process itself. The complete POCT process or testing cycle is a complex series of events that involve many parties in any organization.  Consultation with all the people concerned is vital and ...

Blood gas analysis at the point of care plays an important role during and after an open-heart surgery. acutecaretesting.org recently talked to Prof. Knut Kleesiek, MD, Director of the Institute for Laboratory and Transfusion Medicine of the Heart and Diabetes Center North Rhine-Westphalia in Germany, to find out more ...

50-75 % of all newborns develop jaundice during their first week of life [1,2,3]. The decision behind which treatment is necessary and when it should be initiated is based upon a measurement of the concentration of total bilirubin (ctBil) in serum, plasma or whole blood.  It is therefore obvious that it is important...

Point-of-care testing (POCT) is one of the most rapidly growing areas within laboratory medicine. The need for POCT has developed because in many cases the central laboratory has been unable to meet the expectations of clinical users, particularly with respect to turnaround time. It is widely recognized that...

Oxygen saturation can be obtained from many different types of devices. This range of choices causes some confusion as to definitions of measured variables and their clinical interpretation. This article gives some historical background and describes the two different ways saturation can be obtained from a blood gas ...

Arterial blood gas analysis is a test most frequently performed on critically ill patients in the emergency room, recovery room and intensive care unit by nursing staff. One of the main purposes of the test is assessment of acid-base status, which is often disturbed during critical illness. This article is intended...

Arterial blood gas analysis with the measurement of the partial pressure of carbon dioxide in arterial blood may be performed in the Pediatric ICU to evaluate the efficacy of ventilation or evaluate acid-base status. Although the direct measurement of PaCO₂ remains the gold standard, it provides only a single...