How to Test for Vitamin B3 Deficiency? A Complete Guide
                                
                                
                                •
                                
                                
                        
                                    
                                    3 min read                                
                            
                                While severe vitamin B3 deficiency, known as pellagra, is rare in industrialized nations, certain populations remain at risk due to factors like malnutrition or malabsorption disorders. Understanding how to test for vitamin B3 deficiency is crucial for accurate and timely diagnosis, which is primarily based on a combination of clinical assessment and laboratory tests.