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I think my Chromogranin A test was boarderline because I…

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I think my Chromogranin A...
I think my Chromogranin A test was boarderline because I need to have more blood tests and why do I need three different days of urine over a 24 hour period I got two container one said keep a way from light then I get the third one when i bring the other two back.
Submitted: 8 years ago.Category: Medical
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Answered in 4 hours by:
6/21/2010
Doctor: Dr. Davis, Board Certified Physician replied 8 years ago
Dr. Davis
Dr. Davis, Board Certified Physician
Category: Medical
Satisfied Customers: 0
Experience: M.D. Pathology, Cytopath fellow
Verified
Chromogranin is a protein that is released by certain cells in the body, called neuroendocrine cells. Chromogranin can be measured in the blood and is increased in certain conditions and tumors. Sometimes other proteins, released by neuroendocrine cells, are released by the kidney. Therefore a urine test is needed to detect them and to make sure they are not missed a 24 hour urine sample is needed for this.
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