What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 39802-4: Creatinine in dialysis fluid/Creatinine in serum or plasma (Dialysis fluid+S/P) [Relative ratio]

Name: LOINC Code 39802-4: Creatinine in dialysis fluid/Creatinine in serum or plasma (Dialysis fluid+S/P) [Relative ratio]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:26.654Z

39802-4 is a LOINC code used to identify Creatinine in dialysis fluid/Creatinine in serum or plasma (Dialysis fluid+S/P) [Relative ratio] 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 Creatinine dial fld/Creatinine ser_plas. It is commonly used with the system or sample type Dial fld+Ser/Plas.

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 Creatinine dial fld/Creatinine ser_plas. It is commonly used with the system or sample type Dial fld+Ser/Plas.

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: ACTIVE
Order vs observation: Observation

What it does not mean

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

Key facts

Creatinine in dialysis fluid/Creatinine in serum or plasma
Creatinine dial fld/Creatinine ser_plas
Chemistry; CR; Crea; Creat; Creat diaf; Diaf; Dial fld+SerPl; Dialysate; Dialysis fluid; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; Relative ratio; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

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

Creatinine in dialysis fluid/Creatinine in serum or plasma (Dialysis fluid+S/P) [Relative ratio]Creatinine in dialysis fluid/Creatinine in serum or plasmaCreat diaf/SerPlCreatinine dial fld/Creatinine ser_plasCHEMCreatinine in dialysis fluid/Creatinine in Serum Or Plasma, Dialysis Fluid+BloodRelRto

Frequently asked questions

Code details

Code39802-4

SystemLOINC

Display nameCreatinine in dialysis fluid/Creatinine in serum or plasma (Dialysis fluid+S/P) [Relative ratio]

DescriptionCreatinine dial fld/Creatinine ser_plas

Short nameCreat diaf/SerPl

ComponentCreatinine dial fld/Creatinine ser_plas

PropertyRelRto

TimingPt

System (specimen)Dial fld+Ser/Plas

ScaleQn

ClassCHEM

Example unitsmol/mol

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.15

Last changed2.70

Consumer names

Creatinine in dialysis fluid/Creatinine in Serum Or Plasma, Dialysis Fluid+Blood

Part names

Creatinine dial fld/Creatinine ser_plasRelRtoPtDial fld+Ser/PlasQnRelative RatioPoint in time (spot)Dialysis fluid + Serum or Plasma

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.