Hemogram Blood Test: Procedure, Preparation and Results
This test may be recommended as part of a routine health check-up, while investigating symptoms or keeping track of an existing health condition. The test itself is quick and involves collecting a small blood sample from a vein. This guide covers what a hemogram test checks, when it may be recommended, how the sample is collected and whether any preparation is needed.
What Is a hemogram test?
A hemogram, commonly referred to as a Complete Blood Count (CBC), is a blood test that examines the cellular components of blood. Automated laboratory analysers measure several parameters to provide information about the quantity and characteristics of blood cells.
The test mainly looks at three types of blood cells:
- Red blood cells: Red blood cells transport oxygen from the lungs to different parts of the body.
- White blood cells: They help to fight infections and other diseases.
- Platelets: These work to stop bleeding by helping your blood to clot.
- Haemoglobin: It is an iron-rich protein in your red blood cells that works by carrying oxygen from your lungs to the rest of your body.
- Hematocrit: It is the calculated amount of whole blood that is made up of red blood cells.
- Mean corpuscular volume (MCV): It is the average size of your red blood cells.
Depending on the laboratory and the test ordered, a hemogram may be performed alongside other investigations, such as an ESR, to provide additional information. Looking for a complete hemogram test price near me? Choose a reliable diagnostic centre for convenient blood testing and accurate results.
Procedure
There is no special preparation required for this test, unless asked by your doctor. For the procedure, make sure you wear loose and comfortable clothes on the testing day, and do not forget to share to your doctor about any medication you are on.
During the test, a healthcare professional will take a blood sample from a vein in your arm with the help of a small needle. After the needle is inserted, a small amount will be collected into a test tube or vial. The whole procedure is quick and painless, though you may feel a little sting when the needle goes in and out, but it only lasts for a few minutes. Searching for a complete haemogram test near me? Find convenient testing options with dependable laboratory services and timely reports.
When should you get a hemogram test?
A doctor may recommend a hemogram for several reasons. It can be included in routine screening or ordered when there are symptoms that need further evaluation.
The results may provide clues related to:
- Anaemia and other blood abnormalities
- Certain infections
- Inflammatory conditions
- Some blood disorders
- Before Surgery
A hemogram may be part of a pre-surgical evaluation. Knowing the patient's blood counts can help the medical team assess their overall condition before a procedure.
- Monitoring long-term health conditions
People being treated for certain chronic conditions may need periodic blood tests. Repeated hemogram results can help doctors monitor changes over time and assess how a condition or its treatment is affecting blood parameters.
- Suspected infection or inflammation
Changes in white blood cell counts may occur during infections and some inflammatory conditions. If a person has symptoms such as persistent fever or unexplained weakness, a doctor may recommend a hemogram along with other tests.
Screening for blood disorders
Abnormal blood counts can sometimes point towards conditions such as thalassaemia, sickle cell disease or other blood disorders. Additional testing is usually needed to determine the underlying cause.
FAQs
1. Is fasting needed for a hemogram test?
Usually, no. You can eat and drink normally unless advised otherwise.
2. How long does a hemogram test take?
Blood collection usually takes only a few minutes.
3. What does an abnormal hemogram indicate?
It may point to anaemia, infection, inflammation or other conditions and needs medical interpretation.
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