On a metabolic workup, what does a low bun/creatinine ratio reading mean?

Maybe, kidney diseas. In prior answers, explained bun, creatinine, normal ratio, and high ratio. Low ratio means that the BUN is likely low or normal with relation to the creatinine, indicating that there is adequate blood or volume flowing to the kidneys, but the kidneys are impaired or disease in some way. Need a nephrologist - kidney specialist.