PPD Skin Test | Mendel–Mantoux test | tuberculin skin test (TST)
PPD Skin Test Test Value
Biological Reference Range
|Size Of Erythema||0-10 mm|
|Size Of Induration||0-10 mm|
How is the PPD skin test performed?
A Nurse injects a tiny amount of tuberculin under the skin usually in forearm, A small, pale bump will form at the injection site. After 48 to 72 hours the doctor examines the skin reaction on the injection site.
Note – Tuberculin is a sterile extract of a purified protein derivative (PPD) made from the bacteria that cause TB (Tuberculosis).