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.

LOINCActiveBoth

LOINC Code 99077-0: AFP L3 IA [Mass/Vol]

Name: LOINC Code 99077-0: AFP L3 IA [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:33.064Z

99077-0 is a LOINC code used to identify AFP L3 IA [Mass/Vol] 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 Alpha-1-Fetoprotein.L3. It is commonly used with the system or sample type 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 Alpha-1-Fetoprotein.L3. It is commonly used with the system or sample type 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: Both
Method: IA

What it does not mean

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

Key facts

Alpha-1-Fetoprotein L3 [Mass/volume] in Serum or Plasma by Immunoassay
Alpha-1-Fetoprotein.L3
A1; AFP; AFP L3; Alfa; Alpha fetoprotein; Alphafetoprotein; Chemistry; EIA; ELFA; ELISA; Enzyme immunoassay; Feto; i; IAA; Level; Mass concentration; MEIA; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; SUDS; Tumor marker

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

AFP L3 IA [Mass/Vol]Alpha-1-Fetoprotein L3 [Mass/volume] in Serum or Plasma by ImmunoassayAFP L3 SerPl IA-mCncAlpha-1-Fetoprotein.L3CHEMAlpha-fetoprotein L3, BloodMCnc

Frequently asked questions

Code details

Code99077-0

SystemLOINC

Display nameAFP L3 IA [Mass/Vol]

DescriptionAlpha-1-Fetoprotein.L3

Short nameAFP L3 SerPl IA-mCnc

ComponentAlpha-1-Fetoprotein.L3

PropertyMCnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

MethodIA

ClassCHEM

Example unitsng/mL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.72

Last changed2.72

Consumer names

Alpha-fetoprotein L3, Blood

Part names

Alpha-1-Fetoprotein.L3MCncPtSer/PlasQnIAAlpha-1-Fetoprotein L3Mass ConcentrationPoint in time (spot)Serum or PlasmaImmunoassay

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.