Albumin creatinine ratio test

ALBUMIN CREATININE RATIO TEST

DESCRIPTION – albumin to creatinine ratio is the first method of preference to detect elevated protein. The recommended method to evaluate albuminuria is to measure urinary ACR in a spot urine sample. ACR is calculated by dividing albumin concentration in miligrams by creatinine concentration in grams

METHODOLOGY – quantitative immunoturbidimetry

TURN AROUND TIME – within 24 hours

SPECIMEN REQUIERED –

COLLECT – 24-hour urine. Refrigerate during collection

SPECIMEN PREPARATION – transfer 1 ml aliquot of urine from a well-mixed collection to transport tube.

STORAGE/TRANSPORT TEMPERATURE – refrigerated

STABILITY – ambient: 1 week; refrigerated: 1 month; frozen: 6 months

SPECIAL INSTRUCTIONS – clinical history is mandatory