What is this test?
This laboratory test is performed on a blood sample to determine the level of platelets or thrombocytes present in the blood. Platelets circulate in the bone marrow and are essential for blood clotting.
Why is this test performed?
This test is performed:
- As a part of routine health check-up
- To diagnose bleeding disorders
- To diagnose dengue fever
- To diagnose bone marrow disorders
- To diagnose renal disorders.
- What are platelets?
Platelets or thrombocytes are cells in the blood responsible for normal blood coagulation. They are made by bone marrow and circulate in the blood. They form a plug to block the bleeding of blood.
- What are the risks of this test?
Risks involved in blood withdrawal are rare but include:
- How to prepare for the test?
There are no special preparations for this test. Inform your doctor about prescribed and non-prescribed use of medicines, and any bleeding disorders.
- What are the symptoms of low platelet count?
Following are the symptoms of a low platelet count:
- Bruising
- Prolonged bleeding
- Blood in urine and stool
- Heavy menstruation
- Petechiae (pin-point, purplish spots).
- What are the symptoms of high platelet count?
Following are the symptoms of a high platelet count:
- Weakness
- Bleeding
- Headache
- Chest pain
- Lightheadedness
- Tingling in hands and feet.
Normal range:
Platelet count: 150,000 – 450,000 per ml of blood.
- Interpretation of test results:
Causes of Low platelet count:
- Aplastic anemia
- Idiopathic thrombocytopenia
- Sepsis
- Folate deficiency
- Iron deficiency
- Alcohol abuse
- Vitamin B 12 deficiency
- Liver cirrhosis.
Causes of High platelet count:
- Lung cancer, Ovarian cancer, and some other types of cancers
- Inflammatory bowel disease
- Oral contraceptives
- Removal of spleen
- Tuberculosis
- Steroids
