Your Vitamin B12 Level

What Causes Abnormal Vitamin B12 Levels?

Abnormal vitamin B12 levels can have various causes, ranging in severity from 'serious' to 'generally fatal'.  Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.

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Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms.  In order to diagnose abnormal vitamin B12 levels, we could:

  • Research the topic
  • Find a doctor with the time
  • Use a diagnostic computer system.
The process is the same, whichever method is used.

Step 1: List all Possible Causes

We begin by identifying the disease conditions which have "abnormal vitamin B12 levels" as a symptom.  Here are eight of many possibilities (more below):
  • CML Leukemia
  • Breast Cancer
  • Lung Cancer
  • Kidney Cancer
  • Polycythemia Vera
  • Liver Cancer
  • Colon Cancer
  • Cirrhosis Of The Liver

Step 2: Build a Symptom Checklist

We then identify all possible symptoms and risk factors of each possible cause, and check the ones that apply:
loss of appetite
short-term low-carb dieting
macrocytic red cells
edema of the abdomen
high air pollution exposure
red blood in stools
high alcohol consumption
kidney cancer
having chronic myeloid leukemia
nails that are mostly white
significant amounts of occult blood
very pale fingernails
... and more than 50 others

Step 3: Rule Out or Confirm each Possible Cause

A differential diagnosis of your symptoms and risk factors finds the likely cause of abnormal vitamin B12 levels:
Cause Probability Status
Lung Cancer 99% Confirm
Liver Cancer 29% Unlikely
Polycythemia Vera 23% Unlikely
Kidney Cancer 5% Ruled out
CML Leukemia 4% Ruled out
Breast Cancer 3% Ruled out
Cirrhosis Of The Liver 1% Ruled out
Colon Cancer 0% Ruled out
* This is a simple example to illustrate the process

Arriving at a Correct Diagnosis

The Analyst™ is our online diagnosis tool that learns all about you through a straightforward process of multi-level questioning, providing diagnosis at the end.

If you indicate having had recent lab tests, The Analyst™ will ask further questions including this one:
Vitamin B12 (cobalamin). Unit: pg/mL [pmol/L]
Possible responses:
→ Don't know
→ Confirmed deficiency in the past
→ Under 200 [150] (low)
→ 200-950 [150-700] (normal)
→ Over 950 [700] (elevated)
Based on your response to this question, which may indicate history of B12 deficiency, B12 deficiency, normal B12 levels or elevated B12 levels, The Analyst™ will consider possibilities such as:
Concerned or curious about your health?  Try The Analyst™
Symptom Entry
Symptom Entry
Diagnosis
Diagnosis
Suggestions
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LifeMeter
LifeMeter®
Full Explanations
Explanations
Optional Doctor Review
Review (optional)

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