What time is morning urine?

Morning urine refers to the first bubble of urine in the morning. There is no specific time limit. During sleep, the kidneys secrete urine continuously, and then enter the bladder to store it. Morning urine is darker than urine at other times because urine is not diluted after being stored overnight. Urine contains organic substances or inorganic substances that cause urine color to change. After urine examination, can know very well whether there is inflammation in the urinary system. Want to keep urine samples, need to use morning urine cleaning in a section, the effect is more accurate.