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 99740-3: Hemodialysis fluid removed [Volume] 1 hour

Name: LOINC Code 99740-3: Hemodialysis fluid removed [Volume] 1 hour
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:34.290Z

99740-3 is a LOINC code used to identify Hemodialysis fluid removed [Volume] 1 hour 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 Hemodialysis fluid removed. 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 Hemodialysis fluid removed. 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: ACTIVE
Order vs observation: Observation

What it does not mean

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

Key facts

Hemodialysis fluid removed [Volume] 1 hour
Hemodialysis fluid removed
1 hour; 1.0Hr; 1HR; 60 min; 60 minutes; 60M; 60min; CLIN; Fld; QNT; Quan; Quant; Quantitative; Volume

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

Hemodialysis fluid removed [Volume] 1 hourHemodialysis fluid removed 1h VolHemodialysis fluid removedCLINHemodialysis fluid removed in 1 HourVol1H

Frequently asked questions

Code details

Code99740-3

SystemLOINC

Display nameHemodialysis fluid removed [Volume] 1 hour

DescriptionHemodialysis fluid removed

Short nameHemodialysis fluid removed 1h Vol

ComponentHemodialysis fluid removed

PropertyVol

Timing1H

System (specimen)^Patient

ScaleQn

ClassCLIN

Example unitsmL

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.72

Last changed2.72

Consumer names

Hemodialysis fluid removed in 1 Hour

Part names

Hemodialysis fluid removedVol1H^PatientQnVolume1 hour

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.