Many studies have been carried out to try and decide which groups of patients can be excluded from investigation of their microscopic haematuria, without success.
Prevalence rates of "significant abnormalities" have been found patient studies ranging from 1.6% to 20%.
- Microscopic haematuria can point to a serious pathology in any age group, but is rare in the under 40's
- A single positive urinalysis may be significant
- The incidence of microscopic haematuria rises with age
- The incidence of serious pathology rises in patients with microscopic haematuria rises with age in men
- The incidence of serious pathology is lower in women