LOINCActiveBoth

LOINC Code 105271-1: Platelet aggregation (PRP) [Rel units/Vol]

105271-1 is a LOINC code used to identify Platelet aggregation (PRP) [Rel units/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 aggregation. It is commonly used with the system or sample type PRP.

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 aggregation. It is commonly used with the system or sample type PRP.

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: Aggregometry.collagen induced.190 ug/mL

What it does not mean

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

Key facts

  • Platelet aggregation in Platelet rich plasma by collagen induced 190 ug/mL
  • Platelet aggregation
  • Agg; Aggr; COAGULATION; Coll 190 ug/mL; mcg; PA; Pl; Platelet rich plasma; Platelets; Platelt; Plt; Point in time; QNT; Quan; Quant; Quantitative; Random; RlACnc; 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 aggregation (PRP) [Rel units/Vol]Platelet aggregation in Platelet rich plasma by collagen induced 190 ug/mLPA PRP Coll 190 ug/mLPlatelet aggregationCOAGPlatelet Aggregation, BloodRelACnc

Frequently asked questions

Code details

Code105271-1
SystemLOINC
Display namePlatelet aggregation (PRP) [Rel units/Vol]
DescriptionPlatelet aggregation
Short namePA PRP Coll 190 ug/mL
ComponentPlatelet aggregation
PropertyRelACnc
TimingPt
System (specimen)PRP
ScaleQn
MethodAggregometry.collagen induced.190 ug/mL
ClassCOAG
Example units%
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.78
Last changed2.82

Consumer names

Platelet Aggregation, Blood

Part names

Platelet aggregationRelACncPtPRPQnAggregometry.collagen induced.190 ug/mLRelative Arbitrary ConcentrationPoint in time (spot)Platelet rich plasmacollagen induced 190 ug/mL

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 105271-1 | HealthAssure