For test kit requests or more information
Email NCL
[Click Here] 
Call toll free at 1-800-397-7408


The Principle
The Accuracy
The Prevention
The 1st Choice
The Epidemic
The History
Who to Test?
The Experts
About NCL
FAQ Page

Click Here
to see the letter to the editor regarding B12 and Alzheimer Disease

"If you're interested in personal health, public health, or you just want to read an amazing story, I highly recommend this book."

Dr. Eric Norman

Who Should be Tested?

Anyone with

  • Mental status changes
  • Neurologic or motor symptoms
  • Gastrointestinal surgery
  • Anemia or elevated MCV
  • Age 60 or over annually (or age 50 test every 5 years until age 65 annual testing 4A)
  • Under age 60 with unexplained neurologic symptoms
  • Strict vegetarian diet after one years on diet-- See discussion Preventable
  • Epidemic
  • Taking folate supplements
  • Exclusively breast fed infant of vegan mother or mother with pernicious anemia
  • (infant symptoms may include: irritability, anorexia, failure to thrive, lethargy, comatose, apathetic, anemia, hypotonia, developmental delay, hyperreflexia)
  • symptoms suggesting multiple sclerosis (MS)4A -- See case histories and testimonials.
  • Autoimmune disease
  • Chronic pancreatitis
  • Crohn's disease
  • Malabsorption syndromes
  • Use of histamine2 receptor antagonists or proton pump inhibitors
  • Thyroid disease

Neurologic Symptoms:

  • Paresthesia
  • Weakness or fatigue
  • Muscle aches
  • Impaired vibration or position sense
  • Impaired pain or touch perception
  • Ataxia
  • Abnormal gait
  • Decreased reflexes
  • Unexplained vision or taste impairment
  • Impotence
  • Urinary or fecal incontinence
  • Lhermitte's sign (sudden electric-like shocks down the spine on flexing head)
  • Positive Romberg's sign (increased unsteadiness on feet when eyes are closed)

Psychological Symptoms:

  • Memory loss
  • Disorientation
  • Apathy
  • Irritability
  • Paranoia
  • Depression
  • Hallucinations
  • Violent behavior
  • Psychosis
  • Personality changes
  • Dementia

For test kit requests or more information
E-Mail NCL
Call toll free at 1-800-397-7408

"Not by might, nor by power, but by my Spirit, says the Lord of hosts"