DPT stands for Diphtheria, Pertussis (whooping cough) and Tetanus. A DPT blood test typically measures antibodies to these three bacterial toxins to assess immunity after vaccination or past infection. It helps confirm protective antibody levels or guide booster vaccine decisions, particularly for people with uncertain immunization history or suspected exposure.

A diphtheria antibody is an immunoglobulin produced after infection or vaccination against Corynebacterium diphtheriae. It binds and neutralizes the diphtheria toxin, preventing tissue damage and disease. Blood tests measure antibody levels to assess immunity; values below 0.01 IU/mL indicate no protection, 0.01–0.09 IU/mL partial protection, and ≥0.10 IU/mL generally considered protective.

DPT stands for Diphtheria, Pertussis (whooping cough), and Tetanus. It usually refers to the combined vaccine given in infancy and early childhood to protect against these three bacterial diseases. Modern formulations commonly use acellular pertussis (DTaP) to reduce side effects, with booster doses in older children and adults given as Tdap or Td.

An antibody test detects whether your immune system has made antibodies to a specific pathogen. It’s used to confirm past infection, assess immune response after illness or vaccination, screen population exposure, identify convalescent plasma donors, or evaluate vaccine response in immunocompromised people. It’s not for diagnosing acute infection, since antibodies take days to weeks to develop, and a positive result doesn’t always mean protection.

DPT refers to the combined vaccine that protects against three bacterial diseases: diphtheria, pertussis (whooping cough), and tetanus. Diphtheria causes a thick throat membrane and breathing problems; pertussis leads to severe, prolonged coughing that can be life-threatening in infants; tetanus causes painful muscle stiffness and lockjaw from wound contamination. The DPT vaccine prevents these infections and their serious complications.

If you mean the DPT vaccine, costs vary: in the UK it’s provided free on the NHS; in the US private clinics/pharmacies typically charge about $40–$150 per dose without insurance; in India private providers charge roughly ₹200–₹1,500 per dose. If you mean a DPT antibody (serology) test, expect roughly ₹500–₹2,000 (~$20–$80) at private labs.