Full formMedical & Health
PBSstands forPeripheral Blood Smear
Full Form of PBS
What is PBS?
Peripheral Blood Smear (PBS) is a laboratory test that involves examining a thin layer of blood smeared on a glass slide under a microscope. It helps in evaluating the size, shape, number, and appearance of red blood cells, white blood cells, and platelets. In India, PBS is routinely used in both public and private healthcare settings to diagnose conditions such as anaemia, malaria, dengue, leukaemia, and other blood disorders. It is often ordered alongside a complete blood count (CBC) to provide detailed morphological insights. The test is especially common in rural and urban diagnostic centres due to its low cost and quick turnaround. For patients with fever of unknown origin, unexplained fatigue, or suspected infections, a PBS is a first-line investigation. In Indian medical exams, such as NEET PG and USMLE, understanding PBS interpretation is frequently tested. The procedure is performed by a laboratory technician and usually takes less than an hour to report. Despite the rise of automated analysers, PBS remains invaluable for confirming abnormal cell shapes, including sickle cells, target cells, and blast cells. Its role in monitoring treatment response in haematological cancers is equally critical. Overall, the PBS is a cornerstone of diagnostic haematology in India.
PBS का फुल फॉर्म
परिधीय रक्त स्मीयर
Example
The doctor advised a peripheral blood smear after the patient’s CBC showed low haemoglobin and abnormal cell indices.
PBS — frequently asked questions
What is the full form of PBS?
The full form of PBS is Peripheral Blood Smear, a diagnostic test where a drop of blood is spread on a slide and examined under a microscope to check for abnormalities in blood cells.
What does a PBS test show in Indian hospitals?
A PBS test shows the morphology of red blood cells, white blood cells, and platelets. It helps detect conditions like malaria (by identifying parasites), anaemia (by cell shape changes), and leukaemia (by blast cells) in Indian patients.
How is PBS different from a CBC?
A Complete Blood Count (CBC) gives numerical counts of blood cells, while a Peripheral Blood Smear (PBS) provides visual information about cell shape, size, and structure. In India, doctors often order both together for a complete haematological assessment.