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further blood tests

i have had to have a renal profile and b12 folate blood test after having  routine blood tests. can you tell me the reason why my gp as requested these tests
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1756321 tn?1547095325
An elevated MCV (mean cell volume) would be a likely reason to test for vitamin B12 and/or folate deficiency.  An electrolytes imbalance may be a sign of kidney disease/dysfunction. Not sure exactly what labs you have had done but if you want to post them i can comment further. :)
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1415174 tn?1453243103
Yes, the renal profile usually is a BUN and Creatinine and checks the kidney function. The B12 is probably looking for anemia and/or B12 deficiency.
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