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 4568-2: Hemoglobin Constant Spring Elph pH 8.9 Ql (Bld)

Name: LOINC Code 4568-2: Hemoglobin Constant Spring Elph pH 8.9 Ql (Bld)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:31.115Z

4568-2 is a LOINC code used to identify Hemoglobin Constant Spring Elph pH 8.9 Ql (Bld) 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 Hemoglobin Constant Spring. It is commonly used with the system or sample type Bld.

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 Hemoglobin Constant Spring. It is commonly used with the system or sample type Bld.

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: Electrophoresis pH 8.9

What it does not mean

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

Key facts

Hemoglobin Constant Spring [Presence] in Blood by Electrophoresis alkaline (pH 8.9)
Hemoglobin Constant Spring
Blood; Elec; Elect; Electr; Electro; Electrophhrs; Electrophrs; Elp; Elph; Elph Alk; Ep; Haemoglobin; Hb; HEMATOLOGY/CELL COUNTS; Hemoglobin constant sprint; Hgb; Hgb CSp; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; WB; Whole blood

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

Hemoglobin Constant Spring Elph pH 8.9 Ql (Bld)Hemoglobin Constant Spring [Presence] in Blood by Electrophoresis alkaline (pH 8.9)Hgb CSp Bld Ql Elph AlkHemoglobin Constant SpringHEM/BCHemoglobin constant spring, BloodPrThr

Frequently asked questions

Code details

Code4568-2

SystemLOINC

Display nameHemoglobin Constant Spring Elph pH 8.9 Ql (Bld)

DescriptionHemoglobin Constant Spring

Short nameHgb CSp Bld Ql Elph Alk

ComponentHemoglobin Constant Spring

PropertyPrThr

TimingPt

System (specimen)Bld

ScaleOrd

MethodElectrophoresis pH 8.9

ClassHEM/BC

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0

Last changed2.56

Consumer names

Hemoglobin constant spring, Blood

Part names

Hemoglobin Constant SpringPrThrPtBldOrdElectrophoresis pH 8.9Presence or ThresholdPoint in time (spot)BloodElectrophoresis alkaline (pH 8.9)

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.