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 49959-0: Specific gravity Adjustment to pH 7.4 (U)

Name: LOINC Code 49959-0: Specific gravity Adjustment to pH 7.4 (U)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:33.944Z

49959-0 is a LOINC code used to identify Specific gravity Adjustment to pH 7.4 (U) 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 Observation. It is commonly used with the system or sample type Urine.

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 Observation. It is commonly used with the system or sample type Urine.

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
Method: Adjustment to pH 7.4

What it does not mean

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

Key facts

Specific gravity of Urine by Adjustment to pH 7.4
Observation
Adjust to pH 7.4; Point in time; QNT; Quan; Quant; Quantitative; Random; Sp Gr; UA; UR; URINALYSIS; Urn

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

Specific gravity Adjustment to pH 7.4 (U)Specific gravity of Urine by Adjustment to pH 7.4Sp Gr Ur Adjust to pH 7.4ObservationUASpecific gravity, UrineSpGrav

Frequently asked questions

Code details

Code49959-0

SystemLOINC

Display nameSpecific gravity Adjustment to pH 7.4 (U)

DescriptionObservation

Short nameSp Gr Ur Adjust to pH 7.4

ComponentObservation

PropertySpGrav

TimingPt

System (specimen)Urine

ScaleQn

MethodAdjustment to pH 7.4

ClassUA

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.22

Last changed2.82

Consumer names

Specific gravity, Urine

Part names

ObservationSpGravPtUrineQnAdjustment to pH 7.4Specific gravityPoint 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.