Sign In
Labcorp Oklahoma, Inc.
Test Directory


Dialysis Adequacy KT/V, Fluid

Order Name KT/V Fluid
Test Number: 2017400
Revision Date 05/03/2021
Test Name Methodology LOINC Code
Creatinine Clearance Dialysis Effluent
Urea Clearance Dialysis Effluent
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred See Instructions Dialysis Effluent and Serum See Instructions Refrigerated
Alternate 1 See Instructions Dialysis Effluent and Plasma See Instructions Refrigerated
Instructions Collect Both Dialysis Effluent and Serum/Plasma from Patient
10 mL (3.0) Dialysis Effluent Fluid and Serum Collect both: Dialysis Effluent Fluid in Sterile Container -and- Clot Activator SST -or- Lithium Heparin PST (Light Green Top) Storage and Transport: Refrigerated
Serum or Plasma is needed for calculations in clearance results. Blood samples can be collected when Dialysis Effluent Fluid container is returned. Refrigerate urine during and after collection. Record volume in mL on the specimen container. Include height and weight of patient.
Specimen stability: Ambient 24 hours, Refrigerated 6 days.
Testing Schedule Mon-Fri 
Expected TAT 1-3 Days  
Clinical Use KT/V is an equation used by nephrologists to determine the adequacy of hemodialysis or peritoneal dialysis
K – dialyzer clearance of urea
T – dialysis time
V – volume of distribution of urea, approximately equal to patient’s total body water 
CPT Code(s) 82575, 84545, 84157
Lab Section Chemistry