Many people have blood taken from their veins and also from a finger prick and it is quite common for them to feel a little pain at the site. However, this pain is invariably short lived. So, is it normal to feel pain in the arm days after the blood test?
It is not common to experience pain in the arm days after the blood test. Should this happen to you, it must be brought to the doctor's attention. However, there are several reasons for a person to experience pain in the arm days after the blood test is done. Some of the reasons are enumerated below.
One of the most common reasons for pain in the arm even days after the blood was extracted is hematoma. This occurs when the vein is punctured through and through with the needle leading to the blood to leaking into the surrounding tissue. This leaked blood forms a clot and this causes the pain. In addition, the area around the blood clot will may get inflamed, or turn blue or red. However, the good news is that the blood clot is re-absorbed by the body and with time the clot disappears. It will take around 5 to 7 days for a hematoma to disappear. However, if the hematoma gets infected, the pain in the arm will become worse and will require a course of antibiotics.
Another reason to experience pain days after the blood test is nerve injury. When the lab technician is extracting blood, the needle may injure a nerve that is close to the vein. In addition to the pain, the person will also experience some amount of tingling sensation and numbness in the affected arm. The good news is that nerve injuries during blood test are not serious and tend to heal. However, the healing process may take a few weeks or months and during that time the person will have to bear the pain.
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A blood test is the analysis of blood done in a laboratory after collecting the blood sample from a person. The sample can be withdrawn from vein in the arm with the help of a needle, or it can be taken through a finger prick. The blood test helps to determine the physiology and biochemistry of the blood sample and it helps to find out whether a person is suffering from a disease, what is the mineral content in the blood, what is the effectiveness of a drug or how a particular organ is working.