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 13450-2: Creatinine renal clearance/1.73 sq M (12H U+S/P) [Vol rate/Area]

Name: LOINC Code 13450-2: Creatinine renal clearance/1.73 sq M (12H U+S/P) [Vol rate/Area]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:24.414Z

13450-2 is a LOINC code used to identify Creatinine renal clearance/1.73 sq M (12H U+S/P) [Vol rate/Area] 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 renal clearance/1.73 sq M. It is commonly used with the system or sample type Urine+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 renal clearance/1.73 sq M. It is commonly used with the system or sample type Urine+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 renal clearance/1.73 sq M in 12 hour Urine and Serum or Plasma
Creatinine renal clearance/1.73 sq M
12 hours; 12HR; BSA; Chemistry; Cl; Clear; Clearanc; Clearances; Clr; CR; Crea; Creat; Kidney; Nephrology; Pl; Plasma; Plsm; QNT; Quan; Quant; Quantitative; Renal; SerP; SerPl; SerPlas; Serum; Serum or plasma; Square Meter; SR; UA; UCr; UR; Ur+SerPl; Urn; Volume rate/area; Volume Rate/Ratio

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 renal clearance/1.73 sq M (12H U+S/P) [Vol rate/Area]Creatinine renal clearance/1.73 sq M in 12 hour Urine and Serum or PlasmaCreat Cl/1.73 sq M 12h Ur+SerPl-ArVRatCreatinine renal clearance/1.73 sq MCHEMCreatinine renal clearance/1.73 Sq M, Urine+BloodArVRat

Frequently asked questions

Code details

Code13450-2

SystemLOINC

Display nameCreatinine renal clearance/1.73 sq M (12H U+S/P) [Vol rate/Area]

DescriptionCreatinine renal clearance/1.73 sq M

Short nameCreat Cl/1.73 sq M 12h Ur+SerPl-ArVRat

ComponentCreatinine renal clearance/1.73 sq M

PropertyArVRat

Timing12H

System (specimen)Urine+Ser/Plas

ScaleQn

ClassCHEM

Example unitsmL/min

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0j-a

Last changed2.73

Consumer names

Creatinine renal clearance/1.73 Sq M, Urine+Blood

Part names

Creatinine renal clearance/1.73 sq MArVRat12HUrine+Ser/PlasQnVolume Rate/Area12 hoursUrine and 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.