What is a blood test?
During a blood test, one speaks of a clinical analysis of different parameters of human blood to recognize or monitor the state of health. For the blood test, venous blood is normally removed with a cannula. The blood is then analyzed and examined in a clinical laboratory. In the laboratory diagnosis, the blood is a central role next to the chair, urine and Liqor.
How does a blood test run?
With the help of a dashed tube that is strapped around the lower part of the upper arm, a low blood thaw in the lower arm veins is caused. The vein can then be dotted with a cannula or butterfly. In most cases, a vein is chosen in the elbow. With a Blood tubes The required amount for the laboratory can then be removed from pain.
When is a blood count necessary?
If there is suspicion of infection, coagulation disorders, poisoning or other diseases that can be demonstrated by the blood or an operation, a blood count is usually requested. A distinction is made between the small blood count and the differential blood image. Both together are called "large blood count".
Small blood count
In a small blood count, blood cells, hematocrit and hemoglobin content are examined.
Differential blood image
In the case of a differential blood image, there is a differential quantification of different types of leukocytes. This can be used to clarify unclear leukocytosis or leukopenia. In addition, infections and hemato -oncological diseases are diagnosed with the differential blood image. In the white blood cells, a distinction is made between granulocytes, monocytes and lymphocytes. The determination of a differential blood image can be done either automatically or manually (microscopic), whereby not only leukocytes are counted in microscopic differentiation, but also evaluated the erythrocyte morphology. Smart, irregularly shaped erythrocytes, for example, speak for an iron deficiency. On the other hand, if the cells are oval and greatly enlarged, this could mean a division disorder of the erythrocyte predecessors in the bone marrow. Another factor that is observed in the differential blood image is to recognize possible pathogens. A changed number of leukocyte can mean different diseases.
Which values can still be measured via the blood laboratory?
Electrolyte: Sodium, potassium, calcium; phosphate
Blood coagulation values: Inr or quick value, ptt, thrombocytes
Kidney values: Urea, creatinine
Liver values: Got, GPT, GGT, Bilirubin, albumin, Quick, Cholinesterase
Heart enzymes: Troponin, CK-MB, got, LDH
Inflammatory parameter: BSG, CRP, Leukocytes, Procalcitonin, Interleukin 6
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How can blood values be measured in addition to the classic laboratory examination?
With various Point-of-Care systems Many parameters can now be measured in a short time and without lengthy laboratory work and evaluated in the shortest possible time. Diagnosis and decision -making is thus accelerated to many times and the work is significantly optimized and relieved. In addition, both medical staff and patients benefit from the flexibility of many of these systems. A blood test can also take place during a home visit, which saves both parties time and effort.