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Urine Immunoglobulin Total Light Chains
MessageSpecimen Requirement: Urine (random or 24-hour urine)Immediate Specimen Processing: Transfer at least 1 mL of urine into a BD clear top (no additive) vacutainer before transporting to the lab. Ambulatory Transport Temperature to Inova Central Lab: Refrigerated Specimen Stability: 7 days
Test Code
LAB17562 TLCU
Alias/See Also
TLCU
CPT Codes
83883| 83883
Includes
Includes: Kappa total light chain, lambda total light chain, Kappa/Lambda TLC RatioMayo code: TLCU
Instructions
Processing Instructions: Random Urine1. Transfer at least 1 mL of urine into a BD clear top (no additive) vacutainer before transporting to the lab. 24-Hour Urine1. Collect urine for 24 hours.2. Refrigerated specimen with 4 hours of completion of 24-hour collection.3. This test does not require the use of a chemical preservative. 4. Patient 24 Hour Collection InstructionsProcessing 24-hour urine specimens5. Measure the total volume of the specimen and document that on the specimen label and in Epic. 6. Mix the specimen well.7. Transfer at least 1 mL of urine into a BD clear top (no additive) vacutainer before transporting to the lab.IL 24-hour Urine Pre-Analytical Processing Job AidPreferred Testing Volume: 1 mL urineMinimum Testing Volume: 0.5 mL urineTransport Temperature: Refrigerated Stability: Ambient: 72 hoursRefrigerated : 7 daysFrozen: 20 daysPerforming Lab: Mayo
Report Available
5-Days
Clinical Significance
1230171388
Last Updated: May 18, 2026