Does a B12 shot change urine color to pinkish? Understanding the Spectrum of Urine Colors: What Your Pee May be Telling You PDF] Quantification of chromatographic effects of vitamin B supplementation in urine and implications for hydration assessment. Semantic Scholar Figure 3 from Quantification of chromatographic effects of vitamin B supplementation in urine and implications for hydration assessment. Semantic Scholar Urine Colour Variations in Pregnancy: Causes and Concerns