Longevity.haus

Type

Blood Testing

Duration

15 min

Sample

Blood (venous)

What's included

4 deliverables in this treatment

  • Venous blood draw
  • Lab analysis of Active B12
  • Detailed results report
  • Follow‑up consultation

The Vitamin B12 Active test measures the amount of biologically active cobalamin in a venous blood sample. This single marker may indicate how well your body can use B12 for nerve health, red blood cell production, and energy metabolism. It’s useful for people with dietary restrictions, older adults, or anyone with symptoms of fatigue.

About this treatment

The Vitamin B12 Active test determines the concentration of active cobalamin (the form of B12 that cells can readily use) from one venous blood draw. Active B12 is essential for myelin formation, DNA synthesis, and metabolic pathways that generate energy, so the result may provide insight into whether your intake or absorption is adequate. This test is particularly relevant for vegetarians, vegans, seniors, or individuals on medications that affect B12 absorption. After the sample is collected, the laboratory processes the assay and delivers results within the standard turnaround period. The price covers the blood draw, analysis of the active B12 marker, a comprehensive report, and a short follow‑up call to review the outcome.

Good to know

Sample
Blood (venous)
Markers
1 (Active B12)

Who is this for?

People monitoring B12 status

About the clinic

Reviews, team and credentials

Independent review links and clinic-reported team information.

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£144.00