image/svg+xmlUpon suspectedvitaminB12 deficiency
HoloTCtest
> 50 pmol/l
< 50 pmol/l
B12 deficiencyunlikelyKidneyfailureshouldbeexcludedUpon elevatedcreatinineMMA-testMMA > 32 ng/ml∆MMA estimationfollowingB12 treatment
< 35 pmol/l
36-50 pmol/l
MMA < 32 ng/ml
MMA > 32 ng/ml
MMA < 32 ng/mlnegative B12 balanceB12 deficiencylikelyB12 deficiencyunlikelyKidneyfailureshouldbeexcludedBei erhöhten Kreatinin∆MMA estimation followingB12 treatment
After Prof. W. Hermann, Homburg