Organ function
Cystatin C
Extended panel — run periodically
What it indicates
A protein cleared by the kidneys, used as an alternative basis for estimating filtration.
Why a series helps
It is less affected by muscle mass than creatinine is, so following both together gives a steadier picture.
What this page does not tell you
What a particular Cystatin C result means depends on you: your history, your medication, why the test was taken. Ziro does not interpret results for individuals and does not diagnose. If something in your results warrants a conversation, that conversation is with a doctor, and your results are downloadable so you can bring them.
Others in organ function
Markers routinely used to describe how the liver and kidneys are working.