LOINC

LOINC Code 3258-1: Fibrinogen Ag Immunologic method (PPP) [Mass/Vol]

3258-1 is a LOINC code used to identify Fibrinogen Ag Immunologic method (PPP) [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 Fibrinogen Ag. It is commonly used with the system or sample type PPP.

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 Fibrinogen Ag. It is commonly used with the system or sample type PPP.

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: DEPRECATED
  • Method: Imm

What it does not mean

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

Key facts

  • Deprecated Fibrinogen Ag [Mass/volume] in Platelet poor plasma by Immunologic method
  • Fibrinogen Ag
  • Antigen; Antigens; COAGULATION; Coagulation factor I; FGN; Hematology; Heme; Immunol; Immunology; Immunology?; Level; Mass concentration; Plas; Platelet poor plasma; Point in time; QNT; Quan; Quant; Quantitative; Random

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

Fibrinogen Ag Immunologic method (PPP) [Mass/Vol]Deprecated Fibrinogen Ag [Mass/volume] in Platelet poor plasma by Immunologic methodDeprecated Fibrinogen Ag PPP Imm-mCncFibrinogen AgCOAGFibrinogen antigen, BloodMCnc

Frequently asked questions

Code details

Code3258-1
SystemLOINC
Display nameFibrinogen Ag Immunologic method (PPP) [Mass/Vol]
DescriptionFibrinogen Ag
Short nameDeprecated Fibrinogen Ag PPP Imm-mCnc
ComponentFibrinogen Ag
PropertyMCnc
TimingPt
System (specimen)PPP
ScaleQn
MethodImm
ClassCOAG
Example unitsg/L
StatusDEPRECATED

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.36

Consumer names

Fibrinogen antigen, Blood

Part names

Fibrinogen AgMCncPtPPPQnImmMass ConcentrationPoint in time (spot)Platelet poor plasmaImmunologic

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.

LOINC Code 3258-1 | HealthAssure