Laskimoveren

Laskimoveren is the Finnish term for venous blood. It refers to blood drawn from a vein and circulating in the venous system back to the heart. In humans and animals, venous blood carries deoxygenated blood returning from tissues; after gas exchange in the lungs it returns to the heart through the veins. Laskimoveren consists of plasma and formed elements (red blood cells, white blood cells, and platelets).

Composition and properties: Plasma makes up about 55% of venous blood and contains water, proteins (such as albumin, globulins, and fibrinogen), nutrients, hormones, and waste products. Formed elements include red blood cells, white blood cells, and platelets. The oxygen content of laskimoveren is lower and the carbon dioxide content higher than arterial blood, and pH is influenced by metabolic processes and ventilation. Venous blood is commonly used for routine laboratory testing because it is easier to obtain than arterial blood.

Collection and use: Venous blood is typically obtained by venipuncture from a vein using standard blood collection tubes. The choice of anticoagulant depends on the test: EDTA for hematology (cell counts), heparin for many chemistry tests, citrate for coagulation studies. Samples should be mixed gently, protected from hemolysis, and transported and stored according to test requirements. Laskimoveren is the main source for routine laboratory tests and for transfusion medicine (whole blood or plasma obtained after separation).

Other notes: Venous blood gas analysis exists and provides useful information in some contexts, but arterial blood gas testing is preferred for precise measurements of oxygenation and acid–base status in critical care. The term laskimoveren is primarily used in Finnish medical literature and practice.