What is this test?


This is a test for dengue suspected patients. The test extracts a large amount of information from the blood sample you’ve given, including RBC, WBC, HCT, and Hb.

  • The number and types of white blood cells (WBCs).  There are 5 types of WBCs. All play a role in fighting infection. High numbers of WBCs, or a specific type of WBC, may mean you have an infection or inflammation somewhere in your body. Low numbers of WBCs may mean you are at risk for infections.

  • The number of red blood cells (RBCs). RBCs carry oxygen throughout the body and remove excess carbon dioxide. Too few RBCs may be a sign of anemia or other diseases. In rare cases, too many RBCs may cause problems with blood flow.

  • How the size of your red blood cells varies? This test is known as red cell distribution width (RDW, RDW-CV, or RDW-SD). For instance, you’ll probably have greater differences in red blood cell size if you have anemia.

  • Hematocrit (HCT). This means the portion of red blood cells in a certain amount of whole blood. A low hematocrit may be a sign of too much bleeding. Or it might mean that you have iron deficiency or other disorders. A higher than normal hematocrit can be caused by dehydration or other disorders.

  • Hemoglobin (Hgb, Hb). Hemoglobin is a protein in red blood cells. It carries oxygen from the lungs to the rest of the body. Abnormalities can be a sign of problems ranging from anemia to lung disease.

  • The average size of your red blood cells. This test is known as mean corpuscular volume (MCV). MCV goes up when your red blood cells are bigger than normal. This happens if you have anemia caused by low vitamin B12 or folate levels. If your red blood cells are smaller, this can mean other types of anemia, such as iron deficiency anemia.

  • A platelet (PLT) count. Platelets are cell fragments that play a role in blood clotting. Too few platelets may mean you have a higher risk of bleeding. Too many may mean several possible conditions. 


What is it used for?


It is used to follow up on dengue suspected patients because it is an easily available low-cost test.


Why do I need this test?


You may need this test if you have symptoms of dengue fever. Symptoms usually show up four to seven days after being bitten by an infected mosquito, and may include:

  • Sudden high fever (104°F or higher)

  • Swollen glands

  • Rash on the face

  • Severe headache and/or pain behind the eyes

  • Joint and muscle pain

  • Nausea and vomiting

  • Fatigue

Dengue hemorrhagic fever (DHF) causes more severe symptoms and can be life-threatening. If you’ve had symptoms of dengue fever and/or have been in an area that has dengue, you may be at risk for DHF. Seek medical help immediately if you or your child has one or more of the following symptoms:

  • Severe abdominal pain

  • Vomiting that doesn’t go away

  • Bleeding gums

  • Nose bleeds

  • Bleeding under the skin, which may look like bruises

  • Blood in urine and/or stools

  • Difficulty breathing

  • Cold, clammy skin

  • Restlessness


What happens during this test?


Your health care provider will probably ask about your symptoms and for details on your recent travels. If an infection is suspected, you will get a blood test to check for the dengue virus.

During a blood test, a health care professional will take a blood sample from a vein in your arm, using a small needle. After the needle is inserted, a small amount of blood will be collected into a test tube or vial. You may feel a little sting when the needle goes in or out. This usually takes less than five minutes. . At SOUTH PUNJAB LAB this test is done by MINDRAY-BC 6200.


Reference: https://medlineplus.gov/