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Wie hoch ist der normale Vitamin B12 wert?
Je nach Alter und Geschlecht gelten unterschiedliche Normwerte für Vitamin B12 im Blut. Der Referenzbereich für Erwachsene liegt bei 200 bis 1000 ng/l Blutserum.
Was sagt der Holo TC wert?
Diagnostik des Vitamin B12-Mangels und Fallstricke HoloTC gilt als das biologisch aktive Vitamin B12, weil es über spezifische Transcobalamin- Rezeptoren in die Zelle aufgenommen werden kann. Ein isoliert erniedrigtes HoloTC zeigt bereits die Entleerung der Vitamin B12-Speicher an.
Was ist Holotranscobalamin?
Pathophysiologie Holotranscobalamin (Holo-TC) bezeichnet die metabolisch aktive Form des Vitamin B12. Bio- chemisch handelt es sich hierbei um den Komplex aus Transcobalamin II (TC II) und Vitamin B12.
What are normal and abnormal levels of vitamin B12?
normal levels at 351-664 pmol/L or 475-900 pg/ml. Another test, the Schilling test, is used to asses whether vitamin B12 is absorbed properly.
What should I do if my B12 level is low?
Talk to your provider about what your specific test results mean. Values of less than 160 pg/mL (118 pmol/L) are a possible sign of a vitamin B12 deficiency. People with this deficiency are likely to have or develop symptoms. Older adults with a vitamin B12 level less than 100 pg/mL (74 pmol/L) may also have symptoms.
What are metabolic markers for vitamin B12?
And thus these two substrates are called metabolic markers. It is found that these two markers started to increase even when B12 level was still above its lower limit of 148 pmol/L (200 pg/L), as such they are considered as more sensitive markers and may help for diagnosis of B12 deficiency.
What is the normal range for B12 inflection points?
Several large community studies indicate that, based on the measures of tHcy and MMA levels, the B12 inflection points fall between 200 and 500 pmol/L.