|
Members
Sign Up
Categories
Medical Analysis Articles
General Medical Articles
Online: 12
Members: 2013
|
Zinc Protoporphyrin:
The zinc protoporphyrin (ZPP) test is a blood test that can identify a disruption in the formation of heme. Heme is an essential component of hemoglobin, the protein in red blood cells (RBCs) that carries oxygen from the lungs to the body's tissues and cells. The formation of heme occurs in a series of enzymatic steps that conclude with the insertion of an iron atom into the center of a molecule called protoporphyrin. If there is not enough iron available, then protoporphyrin combines with zinc instead of iron to form zinc protoporphyrin. Since it cannot transport oxygen, ZPP serves no useful purpose in the RBCs that contain it.
ZPP is measured in two ways
1-The free erythrocyte protoporphyrin (FEP) test measures both ZPP, which accounts for 90% of protoporphyrin in red blood cells
2-The free protoporphyrin, which is not bound to zinc. The ZPP/heme ratio gives the proportion of ZPP compared to heme in red blood cells.
هو اختبار الدم الذي يمكن التعرف على حدوث خلل في تكوين الحديد. والحديد هو عنصر أساسي من الهيموجلوبين
الذى يقوم بحمل الاوكسجين عن طريق كرات الدم الحمراء الى اجزاء الجسم
