LOINCBoth

LOINC Code 33976-2: Plasminogen activator inhibitor 1 Ag EIA (PPP) [Mass/Vol]

33976-2 is a LOINC code used to identify Plasminogen activator inhibitor 1 Ag EIA (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 Plasminogen activator inhibitor 1 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 Plasminogen activator inhibitor 1 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
  • Order vs observation: Both
  • Method: EIA

What it does not mean

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

Key facts

  • Deprecated Plasminogen activator inhibitor 1 Ag [Mass/volume] in Platelet poor plasma by EIA
  • Plasminogen activator inhibitor 1 Ag
  • Antigen; Antigens; COAGULATION; ELFA; ELISA; Endothelial cell type PA-I; Enzyme immunoassay; Fast acting PAI; Hematology; Heme; i; IAA; Inhib; Inhibit; Level; Mass concentration; MEIA; PAI; PAI 1; PAI1; PAI-1; PA-inhibitor; Plas; Platelet PAI; Platelet poor plasma; PLG; PLGN; Point in time; Profibrinolysin; QNT; Quan; Quant; Quantitative; Random; SUDS; t-PA inhibitor; 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

Plasminogen activator inhibitor 1 Ag EIA (PPP) [Mass/Vol]Deprecated Plasminogen activator inhibitor 1 Ag [Mass/volume] in Platelet poor plasma by EIADeprecated PAI1 Ag PPP EIA-mCncPlasminogen activator inhibitor 1 AgCOAGPlasminogen activator inhibitor 1 antigen, BloodMCnc

Frequently asked questions

Code details

Code33976-2
SystemLOINC
Display namePlasminogen activator inhibitor 1 Ag EIA (PPP) [Mass/Vol]
DescriptionPlasminogen activator inhibitor 1 Ag
Short nameDeprecated PAI1 Ag PPP EIA-mCnc
ComponentPlasminogen activator inhibitor 1 Ag
PropertyMCnc
TimingPt
System (specimen)PPP
ScaleQn
MethodEIA
ClassCOAG
Example unitsng/mL
StatusDEPRECATED
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.09
Last changed2.70

Consumer names

Plasminogen activator inhibitor 1 antigen, Blood

Part names

Plasminogen activator inhibitor 1 AgMCncPtPPPQnEIAMass ConcentrationPoint in time (spot)Platelet poor plasmaImmunoassay (EIA)

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 33976-2 | HealthAssure