Specimen Collection Requirements
Patient should avoid ingestion of vitamin C prior to collection
Urine, 24-hour urine collection container. Refrigerate during collection.
Thoroughly mix entire collection (24-hour or random) in one container. Transfer 4 mL aliquot from the well-mixed 24-hour urine collection to an aliquot tube. Mix well. (Min: 1.5 mL) or if available transfer urine into Sulfamic Acid tube, available by calling Legacy Client Services at 503-413-1234. FREEZE IMMEDIATELY after aliquoting. Record total volume and collection time interval on transport tube and test request form. This information is required for test interpretation.
Frozen urine specimen over 4 mL
AFTER ALIQUOTING IS COMPLETE: Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 month
MALE 13 years and older: 7-44 mg/day
FEMALE 13 years and older: 4-31 mg/day
CHILDREN (0-12 years): 13-38 mg/day
Reference intervals for random urine samples (mg/L) are not available.
Thursday, January 5, 2017 03:42:24 AM