What it is
Why it matters
Healthy kidneys usually keep albumin in blood; damaged kidneys may let some albumin pass into urine.[1,2]
Root causes of abnormal values
- Barrier core: Albuminuria rises when the kidney filtering barrier lets more albumin cross from blood into urine; it falls when leakage is lower or urine context changes. The core event is protein leakage across a filter, not a general blood-albumin concentration problem.[1,2]
- Persistence layer: Urine albumin is usually interpreted with eGFR, risk context, and repeat testing because transient urine findings can occur. Persistent leakage points more strongly toward a kidney barrier question.[1,2]
- Boundary: BioConst can explain why albumin in urine raises a filter-barrier question, but it does not diagnose a glomerular disease type or interpret one personal urine result.[1,2]