This is a breakdown product of type I fibrillar collagen, which is most commonly found in bone within the human body.
It is a marker of bone turnover and it is usually measured in the urine in patients with osteoporosis. Techniques of urine collection vary, ie 24 hour urine, 2nd morning sample, 8 hour sample. It is usually expressed as a ratio with urinary creatinine concentration.
Annotations allow you to add information to this page that would be handy to have on hand during a consultation. E.g. a website or number. This information will always show when you visit this page.