LOINCActiveBoth

LOINC Code 3288-8: Prothrombin Ag IA Qn (PPP)

3288-8 is a LOINC code used to identify Prothrombin Ag IA Qn (PPP) 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 Prothrombin 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 Prothrombin 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

  • Prothrombin Ag [Units/volume] in Platelet poor plasma by Immunoassay
  • Prothrombin Ag
  • Antigen; Antigens; Arbitrary concentration; COAGULATION; Coagulation factor II; EIA; ELFA; ELISA; Enzyme immunoassay; Factor 2; Factor II; Hematology; Heme; IAA; MEIA; Plas; Platelet poor plasma; Point in time; Prothombin; Prothrm; Prothromb; QNT; Quan; Quant; Quantitative; Random; SUDS

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

Prothrombin Ag IA Qn (PPP)Prothrombin Ag [Units/volume] in Platelet poor plasma by ImmunoassayProthrom Ag PPP IA-aCncProthrombin AgCOAGProthrombin antigen, BloodACnc

Frequently asked questions

Code details

Code3288-8
SystemLOINC
Display nameProthrombin Ag IA Qn (PPP)
DescriptionProthrombin Ag
Short nameProthrom Ag PPP IA-aCnc
ComponentProthrombin Ag
PropertyACnc
TimingPt
System (specimen)PPP
ScaleQn
MethodIA
ClassCOAG
Example unitsarb U/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Prothrombin antigen, Blood

Part names

Prothrombin AgACncPtPPPQnIAArbitrary 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 3288-8 | HealthAssure