Bakwas video bani hy ak tip dobara use nahi karty ap ny us ky upar label be nahi lagya ab ko kaisy pta chly ga ky knsi tip kis regent ki hy. Or ck mb serum sy hota hy ap plasma sy kar raiy ho Regent test tube men dalny ky bad 37 py rakha jata hy 1 mint ky laiy phir serum dhal ky test kiya jata hy