Lab Tests

COMPLETE BLOOD COUNT (CBC)

Apollo Medical Center Kondapur
₹599
per person • all inclusive
HYDERABAD
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Home Sample Collection Available
Test Name COMPLETE BLOOD COUNT (CBC)
Also Known As blood count test, CBC test, complete blood count, blood work, hemoglobin test, blood picture, complete blood picture (CBP), haemogram
Sample Type Blood
Gender Both
Age Group All Age Group
Home Sample Collection Available

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Quick Summary

The Complete Blood Count (CBC) Test is a diagnostic test for both men and women across all age groups, with reports available within 24 hours*, currently offered at ₹599. Home Sample Collection is also available for your convenience. 

Overview of the CBC Test

A complete blood count (CBC) is a simple blood test that checks your red cells, white cells, and platelets in one go. Doctors order this test to flag problems, such as anaemia, infection, or a clotting issue, early. Sometimes it points toward a more serious blood condition too, before you notice anything is wrong. This simple and small test can help your doctor get a bigger and clear picture of your health.

What Does a Complete Blood Count (CBC) Test Check for?

You can find a CBC test written by different names in different labs, such as complete blood picture, blood picture, and complete blood picture (CBP). The test mainly checks for the following components: 

  • Red blood cells (RBCs) or erythrocytes that carry oxygen through your body. 

  • Haemoglobin, a protein present inside RBCs that holds oxygen. 

  • Haematocrit that tells your doctor what part of the blood is made up of RBCs. 

  • White blood cells (WBCs) or leukocytes that fight infection. In a CBC with differential, WBCs are segregated into their 5 components: neutrophils, eosinophils, basophils, monocytes, and lymphocytes. 

  • Platelets or thrombocytes that help your blood clot. 

How to Prepare Before Complete Blood Count (CBC) Test?

You do not need to fast for a standard CBC. Eat and drink as usual. If your doctor has ordered other tests alongside it, ask if fasting is needed for them. Besides, here are a few small details you must mention to your doctor before the test:

  • Any recent infection

  • Pregnancy or if you are on steroids or antihistamines

  • Recent dehydration that can concentrate blood and increase haemoglobin/ haematocrit values

Note: You must also skip intense exercise right before the test. They can temporarily increase your white blood cell count. 

What to Expect During the Procedure?

To draw the blood sample for the CBC test, the technician will first locate a vein in your arm, usually in the inner elbow. They start by cleaning the site with an antiseptic. Then, they insert a sterile needle to draw blood into a collection tube. You will feel a slight sensation, like a quick pinch, upon needle insertion. 

After the sample is collected, a small bandage is applied to stop bleeding at the site. The sample then goes to a laboratory, where automated counters measure red cells, white cells, platelets, and haemoglobin before a pathologist checks anything flagged as unusual. No recovery time is needed, and most people return to normal activity right after the test. 

Why Do Doctors Recommend a Complete Blood Count (CBC) Test?

A CBC is the most common and first test your doctor reaches for. It is fast, affordable, and tells doctors where to look next. The most common reasons why your doctor recommends a CBC test include: 

  • Ongoing Fatigue, breathlessness, or frequent infections 

  • Unusual bruising or bleeding that will not settle

  • A check before surgery, to confirm safe platelet and red cell levels

  • Tracking an existing blood condition over time

  • Recent blood loss from injury or surgery

  • Monitoring blood counts during chemotherapy or its side effects

  • Routine screening during pregnancy to watch for red cell levels through each trimester

What Factors Contribute to the Risk of Abnormal CBC Results?

Abnormal CBC results do not mean you have an illness. Some nutrient gaps, bone marrow-related problems, and even some medicines can make the values deviate from the normal: 

  • Low iron levels make your RBCs smaller and pale, which is a common cause of anemia.

  • Insufficient vitamin B12 and folate leave you with fewer, larger, fragile red cells.

  • Problems with bone marrow can lower red cells, white cells, and platelets together.

  • Effects of medication, like chemotherapy, antibiotics, and anticonvulsants, can drop your counts during treatment.

How To Read a CBC Report at Home?

Once you receive the CBC test report, you will find three columns on the page. One represents the component, the other one the values found in your blood sample, and the last one gives standard/normal values for your reference to check whether yours are within the range or vary. 

Here’s how you can interpret the low and high values of the CBC test, but the best resort is to get your doctor's opinion first before coming to any conclusion: 

Component

Normal Range

Low Levels

High Levels

Haemoglobin (Hb)

Men: 13.0 to 18.0 g/dL. 

Women: 12.0 to 16.0 g/dL.

Points to anaemia, commonly from low iron, low B12, or blood loss.

Dehydration, high altitude exposure, or polycythaemia.

RBC count

Men: 4.5 to 5.5 million/µL. 

Women: 3.5 to 4.5 million/µL.

Suggests anaemia or ongoing blood loss.

Dehydration or a blood disorder called erythrocytosis.

Haematocrit (Hct)

Men: 38.8% to 46.4%. 

Women: 35.4% to 44.4%.

Low RBC and haemoglobin, which point to anaemia, nutritional deficiency, and chronic kidney disease or bone marrow disorder in some cases 

Mainly due to dehydration or smoking.

WBC count

4,000 to 11,000 cells/µL

Can suggest an autoimmune condition, bone marrow issue, or certain medicines.

Usually infection or inflammation. Can also vary due to stress or intense exercise.

Platelet count

150,000 to 450,000/µL

Problem with blood clotting or reduced production in the bone marrow. 

Indicate thrombocytosis, which can occur due to infection, inflammation, or low iron

Special Conditions That Affect Your CBC Test Results

Pregnancy

Your blood volume increases once you are pregnant, and this naturally lowers the concentration of red blood cells in your sample, even when your pregnancy is entirely healthy. Because of this, your result can resemble mild anemia.

Age of the Individual

Newborns carry a higher red cell count than adults, as a carryover from the lower oxygen environment in the mother’s womb. On the other hand, an adult has a lower RBC count as bone marrow activity slows down with age. 

Living in Higher Altitudes

If you are living at or travelling to high altitudes, lower oxygen levels in the air trigger the body to produce more red blood cells for better oxygen delivery. 

Chronic Illness

  • Kidney disease reduces the body's production of erythropoietin, the hormone that signals bone marrow to make red cells. That is why chronic kidney patients have persistently low counts. 

  • Diabetes is monitored in a similar way, since long-term blood sugar imbalance can affect blood cell health over time. 

  • Autoimmune conditions can also reduce or increase your blood cell components, based on which cells the immune system has targeted.

  • A low platelet count can point to advanced liver disease (such as cirrhosis). This happens because of a congested spleen caused by restricted blood flow through the liver.

How to Maintain Healthy CBC Levels?

Healthy CBC levels start with what's on the plate. Iron from leafy greens, lentils, and red meat builds haemoglobin, whereas vitamin B12 and folate, found in eggs, dairy, and fortified cereals, help bone marrow finish the job properly. Lean protein and whole grains keep white cells balanced for a steady immune response. 

Beyond diet, stay physically active and do regular exercise to improve circulation, and get good sleep for at least 7 - 8 hours. Also, stay properly hydrated, as concentrated blood can shift results on the day itself. 

Fatigue, low energy, or unexplained bruising deserve real answers, not guesswork. Book your CBC test today and get results you and your doctor can trust! 

 

Frequently Asked Questions

A CBC checks the three core components of blood — red cells, white cells, and platelets — screening broadly for anaemia, infection, clotting problems, and certain blood cancers in a single test.
For a standard CBC, no special prep is needed. Eat and drink normally. Just mention any recent illness, pregnancy, or medication to your doctor beforehand.
No single number alone is usually alarming. A combination, such as very low haemoglobin alongside a sharply high white cell count, or a platelet count far outside range, is what prompts your doctor to investigate further.
A CBC can point toward anaemia, infection or inflammation, bleeding or clotting disorders, certain blood cancers such as leukaemia, and how the immune system is currently functioning, all read from the same blood draw.
Most Indian labs return CBC results within 24 hours. Some same-day options are also available, depending on your lab and city.
₹599
per person • all inclusive
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