Test Detail
Interpreting Results

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Written by
Dr. Shreya Gupta
BDS, MDS - Oral and Maxillofacial Pathology
Reviewed by
Dr. Ashish Ranjan
MBBS, MD (Pharmacology)
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Porphobilinogen - Qualitative

(PBG, Qual.)
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This test is for
Male, Female
Test Preparation
  1. No special preparation required


What is PBG, Qual.?

Haemoglobin protein in red blood cells responsible for carrying oxygen in blood is a type of porphyrin which is formed from the intermediate Porphobilinogen (PBG). Porphyrins do not accumulate in the body and get excreted via urine or stool. In case they are not released from the body, there is a signal where they are getting accumulated. Hence, the PBG qualitative test diagnoses porphyria in the urine.

Why is PBG, Qual. done?

The test is performed when either porphyria or an associated disorder is suspected due to the presence of certain symptoms such as pain in the limbs, backache, abdominal pain, rapid heart-beat, nausea and vomiting

Interpreting PBG, Qual. results


A normal test result indicates absence of PBG in urine sample and is considered as a negative test which implies that the symptoms caused are not due to porphyria but some other disorder. An abnormal result implies presence of PBG in high concentration.




The laboratory is the hub of the hospital. It has state of the art equipment and functions 24hrs a day 7 days a week. It processes 3000 tests/day. It has a staff of 75 personnel. There are many well qualified pathologists, and Microbiologists , headed by Dr Nita Munshi, who has over 35 years of laboratory experience. The laboratory is in the process of rapid progress and expansion with continuous upgradation of tests and techniques.
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