In medicine, the BUN-to-creatinine ratio is the ratio of two serum laboratory values, the blood urea nitrogen (BUN) (mg/dL) and serum creatinine (Cr) (mg/dL). Outside the United States, particularly in Canada and Europe, the truncated term urea is used (though it is still the same blood chemical) and the units are different (mmol/L).
Your child must be both physically and emotionally ready for toilet training. Most children are ready to start when they are between 22 and 30 months of age, but every child is different. Toilet training usually becomes a long and frustrating process if you try to start it before your child is ready.
Also called elimination communication or natural infant hygiene, infant potty training is the practice of introducing your baby to the toilet or potty at a very early age â usually between birth and 4 months.hile the notion of potty training a very young infant seems radical to many American parents, it's not a new idea. Before 1950, most children in the United States were toilet trained by 18 months. And today, most African, Asian, and European babies are trained well before their second birthday.