Low levels of vitamin B12 can cause problems with your nervous system and blood cell production A simple Vitamin B12 blood test can tell you whether your levels are low.

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Individuals with cystic fibrosis or CFTR gene variants have a 3-fold higher risk of developing pancreatic cancer after 50 years of age.

Although the sweat chloride test remains the gold standard for the diagnosis of cystic fibrosis, alternative diagnostic tests such as genotyping and electrophysiologic measurements must be performed ...