{"product_id":"cystatin-c","title":"Cystatin C","description":"\u003cp\u003eA creatinine-independent kidney marker, unaffected by muscle mass — which matters if you carry a lot of it.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"\/pages\/biomarker-guide-kidney#m-cystatin-c\"\u003eCystatin C in the Biomarker Guide\u003c\/a\u003e — what it is, why it is tested, and what moves the number.\u003c\/p\u003e\u003cp\u003eAdd-on markers can only be added to venous samples.\u003c\/p\u003e\u003ch3\u003eTiming\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eNo fasting needed and no particular time of day.\u003c\/strong\u003e Unlike creatinine, cystatin C is not pushed up by a meal of cooked meat, and it does not move with muscle mass.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTurnaround:\u003c\/strong\u003e the lab reports this test within 24 hours of receiving your sample, counted in working days. Most samples reach them within about 3 days of posting. Full detail on our \u003ca href=\"\/pages\/turnaround-times\"\u003eTurnaround Times\u003c\/a\u003e page.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eWe do not interpret results. Not medical advice or a diagnosis.\u003c\/em\u003e\u003c\/p\u003e","brand":"N1 Health","offers":[{"title":"Default Title","offer_id":58266852098392,"sku":"N1-A-CYSTATIN-C","price":65.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/1533\/1928\/files\/cystatin-c-v5.png?v=1787608803","url":"https:\/\/n1health.co.uk\/products\/cystatin-c","provider":"N1 Health","version":"1.0","type":"link"}