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.

LOINCActiveObservation

LOINC Code 45273-0: Pregnancy associated plasma protein A MoM [%]

Name: LOINC Code 45273-0: Pregnancy associated plasma protein A MoM [%]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:30.176Z

45273-0 is a LOINC code used to identify Pregnancy associated plasma protein A MoM [%] 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 Pregnancy associated plasma protein A multiple of the median. It is commonly used with the system or sample type Ser/Plas.

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 Pregnancy associated plasma protein A multiple of the median. It is commonly used with the system or sample type Ser/Plas.

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: Observation

What it does not mean

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

Key facts

Pregnancy associated plasma protein A multiple of the median [Percentile]
Pregnancy associated plasma protein A multiple of the median
Assoc; Chemistry; Down syndrome; Gestation; Gestations; Gravida; MoM; Mult; Multi; PAPPA; PAPP-A; PAPP-A MoM; Pappalysin-1; Percentile; Pl; Plasma; Plsm; Point in time; PR; Pregnancies; Prot; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SmQn; SR; trisomy 21

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

Pregnancy associated plasma protein A MoM [%]Pregnancy associated plasma protein A multiple of the median [Percentile]PAPP-A MoM Prctl SerPlPregnancy associated plasma protein A multiple of the medianCHEMPregnancy Associated Plasma Protein A MoM, BloodPrctl

Frequently asked questions

Code details

Code45273-0

SystemLOINC

Display namePregnancy associated plasma protein A MoM [%]

DescriptionPregnancy associated plasma protein A multiple of the median

Short namePAPP-A MoM Prctl SerPl

ComponentPregnancy associated plasma protein A multiple of the median

PropertyPrctl

TimingPt

System (specimen)Ser/Plas

ScaleSemiQn

ClassCHEM

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.17

Last changed2.75

Consumer names

Pregnancy Associated Plasma Protein A MoM, Blood

Part names

Pregnancy associated plasma protein A multiple of the medianPrctlPtSer/PlasSemiQnPercentilePoint in time (spot)Serum or 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.