LOINCActiveBoth

LOINC Code 6003-8: Platelet factor 4 Ag IA (PPP) [Mass/Vol]

6003-8 is a LOINC code used to identify Platelet factor 4 Ag IA (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 Platelet factor 4 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 Platelet factor 4 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: 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

  • Platelet factor 4 Ag [Mass/volume] in Platelet poor plasma by Immunoassay
  • Platelet factor 4 Ag
  • Antigen; Antigens; COAGULATION; EIA; ELFA; ELISA; Enzyme immunoassay; Fac; Fact; Hematology; Heme; IAA; Level; Mass concentration; MEIA; PF; PF4; PI-factor 4; Pl; Plas; Platelet poor plasma; Platelet type heparin inactivator; Platelets; Platelt; Plt; Point in time; QNT; Quan; Quant; Quantitative; Random; SUDS; Thrombocyte; Thrombocytes

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

Platelet factor 4 Ag IA (PPP) [Mass/Vol]Platelet factor 4 Ag [Mass/volume] in Platelet poor plasma by ImmunoassayPF4 Ag PPP IA-mCncPlatelet factor 4 AgCOAGPlatelet factor 4 antigen, BloodMCnc

Frequently asked questions

Code details

Code6003-8
SystemLOINC
Display namePlatelet factor 4 Ag IA (PPP) [Mass/Vol]
DescriptionPlatelet factor 4 Ag
Short namePF4 Ag PPP IA-mCnc
ComponentPlatelet factor 4 Ag
PropertyMCnc
TimingPt
System (specimen)PPP
ScaleQn
MethodIA
ClassCOAG
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0d
Last changed2.73

Consumer names

Platelet factor 4 antigen, Blood

Part names

Platelet factor 4 AgMCncPtPPPQnIAMass ConcentrationPoint in time (spot)Platelet poor 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.

LOINC Code 6003-8 | HealthAssure