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Vanderbilt Pathology Laboratory Services

Test Directory



ELECTROPHORESIS AND IMMUNOFIXATION URINE (UPEP)

Department: Immunology
Test Synonym(s): uPEP, Urine Protein Electrophoresis, U-PEP, UPE, ELU
CPT Codes: 84165, 84335
Methodology: Electrophoresis and immunofixation
Reference Range: No monoclonal
Tube Type: Routine urine container - 20 mL or 24 hour collection
Specimen: Urine (24 hour collection preferred)
Alternate Specimen: None
Minimum Volume: 6 mL
Temperature: Refrigerate
Reasons for Rejection: Urine collected in a container containing acid
Days Performed: Monday - Friday
Times Performed: Morning
TAT: Usually 48 hours
Special Instructions: Must order urine total protein (urine). If none ordered, total protein will be ordered and charged. Includes both electrophoresis densitometric scan and immunofixation of Kappa and Lambda. If monoclonal protein is detected, follow-up identification will be performed and charged additionally.

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