Cobalamin Question

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Dyana

Member Since 2009
Last Saturday J.D. had a fasting blood test for Folate & Cobalamin, and Electrolyte Panel, and I told the vet to throw in a Phosphorus test as well. We finally got the IDEXX Laboratories results back today.

Phosphorus:
PHOSPHORUS 3.5 (Ref Range 3.0 - 7.0 mg/dL)

Electrolyte Panel:
TCO2 (BICARBONATE) 14 (Ref Range 13 - 25 mEq/L)
CHLORIDE 122 (Ref Range 111 - 125 mEq/L)
POTASSIUM 4.4 (Ref Range 3.9 - 5.3 mEq/L)
SODIUM 153 (Ref Range 147 - 156 mEq/L)
NA/K RATIO 35
ANION GAP 21 (Ref Range 13 - 27 mEq/L)

Folate & Vitamin B12 (Cobalamin):
COBALAMIN (B-12) >2000 (Ref Range 275-1425 ng/L) High
RESULT VERIFIED BY REPEAT ANALYSIS
FOLATE 19.4 (Ref Range 8.9 - 19.9 ug/L)

Has anyone heard of too much Cobalamin?
J.D. gets a weekly Cyanocobalamin injection of 32 units every Saturday (and he was fasted for this test and did not get his weekly injection until way later in the afternoon after this blood test was taken (so one week previously) and he gets 1 Zobaline for Methylcobalamin once a day at night time, and I did not give him his Zobaline the night before the test was taken.

The vet says to either slow down on the injections of Cyanocobalamin or daily the Zobaline (Methycobalamin) and test again in 4 weeks. He gets (or I thought he was getting) the cyanocobalamin for cronic pancreatitis and the methylcobalamin for neoropathy (hind end and possibly some neck weakness at times). I think I am going to discontinue the injections. Any thoughts on this or any of the other test results. I guess this is why they took almost a week to come back because of the "RESULT VERIFIED BY REPEAT ANALYSIS".
 
The prescription or instructions on the plastic bottle says "USE 1/4 OF AN ML WEEKLY FOR 6 TREATMENTS THEN EVERY 1 TO 2 MONTHS". 1/4 of a ML is 0.25ml or 25 units is it not? I actually give him just past the 30 unit mark on the insulin syringe (so 32 units maybe). And, I talked to my vet about not stopping the weekly shots and he (his old vet) concurred. I guess because he thought it couldn't hurt.
 
So Larry, have you every heard of a cat having an >2000 on a Cobalimin test?
 
Thanks Larry.
So, you think he's not abnormal?
I tried changing the word "hypocobalaminemia" to "hypercobalaminemia" and Googling it and received no matches.
 
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