blodanalyser

Blodanalyser are medical devices designed to perform quantitative and qualitative analyses on blood samples to support diagnosis, treatment, and monitoring. They are used in hospital laboratories, medical clinics, and some point-of-care settings. Common categories include hematology analyzers, chemistry analyzers, blood gas analyzers, and coagulation analyzers, as well as handheld devices for rapid testing.

Hematology analyzers count and characterize blood cells using electrical impedance or optical methods, yielding red and white cell counts, hemoglobin, hematocrit, and platelet counts. Chemistry analyzers measure electrolytes, glucose, enzymes, and lipids with photometric or electrochemical methods. Blood gas analyzers measure pH, pO2, pCO2, bicarbonate, and electrolytes from arterial samples. Coagulation analyzers assess clotting times such as PT/INR and aPTT, along with other markers.

Specimens commonly use EDTA for hematology, heparin for chemistry or blood gas, and citrate for coagulation testing. Pre-analytical handling and sample quality are important, as delays or improper collection can affect results.

Quality control and calibration are essential; laboratories follow standards and guidelines such as CLSI and ISO 15189. Results may be affected by lipemia, icterus, hemolysis, or sample mix-ups.

Historically, automated blood counting emerged with the Coulter counter in the 1950s, evolving into integrated systems that combine several testing modules. Blodanalyser play a central role in clinical decision making, enabling screening, diagnosis, and monitoring of hematologic and systemic conditions.