LOINCObservation

LOINC Code 71342-0: Kt/V.Hemodialysis [Derived]

71342-0 is a LOINC code used to identify Kt/V.Hemodialysis [Derived] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Kt/V.Hemodialysis. It is commonly used with the system or sample type ^Patient.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Kt/V.Hemodialysis. It is commonly used with the system or sample type ^Patient.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: TRIAL
  • Order vs observation: Observation
  • Method: Derived

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

  • Kt/V.Hemodialysis [Derived]
  • Kt/V.Hemodialysis
  • Derived from Urea Reduction Ratio, no patient weight. Formula is 100 x (1 - [C1/C0]), in which C1 is the blood urea nitrogen measured 5 minutes after the end of dialysis and C0 is the predialysis blood urea nitrogen. It is a quantitative measurement of an individual patient's urea clearance during a single hemodialysis treatment and can be used as a proxy for the adequacy of solute clearance during a treatment.
  • ESRD; ESRD survey; Point in time; QNT; Quan; Quant; Quantitative; Random; Ratios; Rto; Survey

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Kt/V.Hemodialysis [Derived]Kt/V.HemodialysisSURVEY.ESRDRatioPt^PatientQn

Frequently asked questions

Code details

Code71342-0
SystemLOINC
Display nameKt/V.Hemodialysis [Derived]
DescriptionKt/V.Hemodialysis
ComponentKt/V.Hemodialysis
PropertyRatio
TimingPt
System (specimen)^Patient
ScaleQn
MethodDerived
ClassSURVEY.ESRD
Example unitsratio
StatusTRIAL
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.40
Last changed2.67

Part names

Kt/V.HemodialysisRatioPt^PatientQnDerivedPoint in time (spot)

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

LOINC Code 71342-0 | HealthAssure