Why Does the Emergency Room Draw Blood

Every single time you visit an emergency room, chances are, they will draw blood from your veins and take it in for testing. A lot of people don’t quite understand why phlebotomy or the drawing of blood is conducted every time one visits the emergency room. In this post therefore, we will be looking at some of the reasons why blood is very important in the diagnosis of diseases and why it is always drawn when one visits the emergency room. So, why is blood important in the diagnosis of diseases?

Importance of blood in the diagnosis of diseases

While a blood test looks and sounds simple to you, the actual diagnostic process and procedure behind the laboratory’s closed doors is quite complex. It requires complex equipment and the discerning eye of the technician to careful analyze the blood sample and provide the desired feedback.

Blood is a window that lets medical practitioners see into the health of the body and since time immemorial, blood samples have been utilized to monitor people’s health conditions ranging from the glucose levels to the hormonal balance in an individual. Blood is the medium of transport in the body and therefore carries with it a lot of components. These include red blood cells, white blood cells, platelets, hemoglobin, hormones and many other important components. In case of an infection or health complication therefore, it is easy to detect the same by conducting a test to determine the exact number of the said components. There are very many types of blood tests which you should expect when you visit emergency room. They include;

Complete Blood Count (CBC) Blood tests

They are ordered stat which comes from the Latin word statim which means immediately. A CBC provides a general picture of your blood levels. It’s typically ordered for complaints such as fatigue, weakness, inflammation, bruising, fever and bleeding. It is normally conducted when the physician thinks that you are in need of blood or wants to ascertain that the levels of blood are well above or within the threshold range.

Complete blood count is an automated count of the cells in your blood that includes information on the number, shape and size of your cells. Complete blood count provides vital information on the following components of human blood. 

White Blood Cell (WBC) -count helps to identify infection, immune problems, cancer and leukemia. If the numbers are high or low, further testing is usually required. We all know that the white blood cells are the soldiers of the body and are sent to the site of the infection to try and fight off any bacteria. If the infection is severe therefore, the number of white blood cells will be reduced and a white blood cell count will clearly indicate this.

Red Blood Cell (RBC) –If there is any concern whatsoever that you may have an infection or that you are experiencing anemia, a red blood cell count will automatically help to pick this up. Reduced red blood cell counts are a clear indication that one is ailing from a certain infection and anemia is a real threat.

Hemoglobin (HGB) – the other important check that is done when blood is taken for testing is the hemoglobin test/count. This measures the oxygen-carrying proteins in the blood. Hemoglobin is the protein contained in blood that is responsible for the transportation of oxygen to all the other body organs that need it. When the hemoglobin count is considered low, it indicates that there was blood loss and potentially anemia which can be life-threatening.

Hematocrit (HCT) – Hematocrit count measures the percentage of red blood cells in a given volume of blood. There is a certain percentage per volume of blood which is considered safe and below which physicians are forced to order a blood transfusion. If after a Hematocrit count the level is considered low, then the physician concludes that anemia is a real threat and treatment begins immediately. 

Platelets count –Platelets are instrumental in the blood clotting process and without them, wounds wouldn’t stop bleeding. A platelets count therefore is looked at to identify problems related to bleeding and clotting. It is especially instrumental if the victim was in an accident or was seriously injured and the physician wants proof that transfusion is necessary.

2. Basic Metabolic Panel (BMP)- Basic metabolic panel checks the electrolyte and mineral levels in the blood that are so important for keeping your muscles, heart, kidneys and other organs working properly.

3. Lipid panel-this is a test used to assess the risks individuals are in as far as cardiovascular diseases are concerned.

All these tests are aimed at carefully and carefully analyzing the blood to identify potential health problems and treat them accordingly. For more information on blood tests and their importance, give us a call here at Bellaire and we will gladly provide more information on the same. Give us a call today for blood tests and a host of other emergency room services at a very affordable rate.

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