LOINCActiveOrder

LOINC Code 50197-3: aPTT panel (PPP)

50197-3 is a LOINC code used to identify aPTT panel (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 aPTT panel. 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 aPTT panel. 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: Order
  • Panel type: Panel

What it does not mean

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

Key facts

  • aPTT panel - Platelet poor plasma
  • aPTT panel
  • aPTT Pnl; COAGULATION; Pan; PANEL.COAGULATION; Panl; Plas; Platelet poor plasma; Pnl; 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

aPTT panel (PPP)aPTT panel - Platelet poor plasmaaPTT Pnl PPPaPTT panelPANEL.COAGaPTT panel, Blood-

Frequently asked questions

Code details

Code50197-3
SystemLOINC
Display nameaPTT panel (PPP)
DescriptionaPTT panel
Short nameaPTT Pnl PPP
ComponentaPTT panel
Property-
TimingPt
System (specimen)PPP
ScaleQn
ClassPANEL.COAG
StatusACTIVE
Order/ObservationOrder

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.22
Last changed2.73

Consumer names

aPTT panel, Blood

Part names

aPTT panel-PtPPPQnPoint in time (spot)Platelet poor plasma

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 50197-3 | HealthAssure