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8586M
NITROGEN, TOTAL, 24-HOUR URINE

Test Code 8586M 
Test NITROGEN, TOTAL, 24-HOUR URINE 
Methodology Dumas Combustion 
Description Useful for assessing nutritional status (protein malnutrition), evaluating protein catabolism, and determining nitrogen balance, when used in conjunction with 24-hour fecal nitrogen measurement. 
Specimen 10 mL (minimum: 2.0 mL) from a 24-hour urine collection. No preservative. See "Urine Preservatives" for multiple collections. Send specimen frozen in a plastic 13-mL urine tube.

NOTE:
1. 24-HOUR VOLUME IS REQUIRED ON REQUEST FORM FOR PROCESSING.
2. Follow "Urine Collection" instructions. 

Reference Values 4-20 g/24 hours 
Analytic Time 2 Days 
Day(s) Test Set Up Monday, Wednesday, Friday 
CPT Code(s) 84999  

Special Instructions