What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveBoth

LOINC Code 13050-0: Protein C/Coagulation factor IX (PPP) [Mass ratio]

Name: LOINC Code 13050-0: Protein C/Coagulation factor IX (PPP) [Mass ratio]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

13050-0 is a LOINC code used to identify Protein C/Coagulation factor IX (PPP) [Mass ratio] 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 Protein C/Coagulation factor IX. It is commonly used with the system or sample type PPP.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Protein C/Coagulation factor IX. 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

What it does not mean

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

Key facts

Protein C/Coagulation factor IX [Mass Ratio] in Platelet poor plasma
Protein C/Coagulation factor IX
Antihemophilic factor B; Autoprothrombin II-a; Christmas factor; Coag; Fac; Fact; Fact IX; Factor 9; FIX; Hematology; Heme; Mass concentration ratio; Mass ratio; MCRto; PC; Plas; Plasma thromboplastin component; Platelet poor plasma; Point in time; PR; Prot; Prot C; PTC; QNT; Quan; Quant; Quantitative; Random; Thrombocyte cofactor II

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Protein C/Coagulation factor IX (PPP) [Mass ratio] (13050-0)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Protein C/Coagulation factor IX (PPP) [Mass ratio]Protein C/Coagulation factor IX [Mass Ratio] in Platelet poor plasmaProt C/Fact IX PPPProtein C/Coagulation factor IXCOAGProtein C/Coagulation Factor IX, BloodMRto

Frequently asked questions

Code details

Code13050-0

SystemLOINC

Display nameProtein C/Coagulation factor IX (PPP) [Mass ratio]

DescriptionProtein C/Coagulation factor IX

Short nameProt C/Fact IX PPP

ComponentProtein C/Coagulation factor IX

PropertyMRto

TimingPt

System (specimen)PPP

ScaleQn

ClassCOAG

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0j-a

Last changed2.42

Consumer names

Protein C/Coagulation Factor IX, Blood

Part names

Protein C/Coagulation factor IXMRtoPtPPPQnMass RatioPoint 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.