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A 34-year-old member asked:

signs of a positive ppd?

1 doctor answer2 doctors weighed in
Dr. Anthony LaBarbera
Dr. Anthony LaBarberaanswered
Pediatrics 28 years experience
See below: Swelling at the test site. The amount of swelling needs to be measured, and assessed by a qualified provider or their staff.

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A 21-year-old member asked:

Who what is positive ppd

2 doctor answers3 doctors weighed in
Dr. Carlo Hatem
Pulmonary Critical Care 25 years experience
Exposure: It is a sign that you have been exposed to tuberculosis, that you carry the germs for TB in either active or dormant form. Exposure can be recent or very old. People who had vaccination for TB can have a positive PPD in the first few years after receiving the vaccine.
A 47-year-old member asked:

Positive PPD reading if red?

1 doctor answer3 doctors weighed in
Dr. Yash Khanna
Family Medicine 57 years experience
Ppd reading red?: No redness does not mean it is positive.You feel the induration in mms to interpret it after 48 to 72 hours.5mm or more is positive in HIV posotive person, in someone with recent exposure to tb, with nodular or fibrotic changes on xray consistant with healed TB and patients with organ transplant and immunocompromised 10mm or more +in recent arrivals from high prevalace ares nursing homes 15mm + in.
A 34-year-old member asked:

What should I do if I just got a positive PPD reading?

2 doctor answers6 doctors weighed in
Dr. Yash Khanna
Family Medicine 57 years experience
POSITIVE PPD: If it is the first time positive reading and it is more than 15mm positive, you need to have xray chest done, if negative you need prophylactic inh prescribed by your doctor for 9 months.
Philippines
A 24-year-old female asked:

Is it posible that the cause of positive PPD is beacuse of bcg?

3 doctor answers5 doctors weighed in
Dr. Douglas Arenberg
Pulmonary Critical Care 31 years experience
Doubtful: In the us, we tend to ignore the bcg status when interpreting the PPD skin test. There are many reasons for this, and one is that the effect (on the skin test) of the bcg tends to be small, and the degree of reaction we look for on the PPD is usually large (depending on your other risk factors for exposure and for active TB if you are exposed).
CA
A 28-year-old male asked:

What is the definition or description of: positive ppd?

2 doctor answers4 doctors weighed in
Dr. Gary Kohn
Pediatric Pulmonology 27 years experience
See below: Ppd stands for purified protein derivitive and is from the bacteria found in tb. A small quantity is placed in the layers of your skin and if swelling develops in that area over the proceeding 72 hrs this could indicate that you have been exposed to tb. A positive depends on the size and risk factors that one has for exposure to tb. If not high risk and healthy it needs to be > 15 mm in size.

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Last updated Sep 28, 2016

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