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Urine methymalonate -- should I test before or after starting B12?

NilaJones

Senior Member
Messages
647
I'm sure the ideal answer would be 'both', but that is unlikely to be possible.

I'd also love input on these other ordered tests -- before or after starting B12?

Homocysteine

cystathionine (or CBS polymorphisms, but I'm guessing this is cheaper?)

2-methylcitrate

GSH (Glutathione, in plasma)

GSSG (oxidized Glutathione, test both)

S-adenosymethionine (in RBC)

S-adenosylhomocysteine (RBC, test both for ratio)

And, hello everyone :). I haven't been posting because I've been too brain-foggy, but have been reading a little.