LOINCActiveBoth

LOINC Code 2831-6: Pregnancy specific protein 1 (S) [Mass/Vol]

2831-6 is a LOINC code used to identify Pregnancy specific protein 1 (S) [Mass/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 Pregnancy specific protein 1. It is commonly used with the system or sample type Ser.

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 Pregnancy specific protein 1. It is commonly used with the system or sample type Ser.

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

  • Pregnancy specific protein 1 [Mass/volume] in Serum
  • Pregnancy specific protein 1
  • Chemistry; Gestation; Gestations; Gravida; i; Level; Mass concentration; Point in time; PR; Preg Sp Prot1; Pregnancies; Prot; QNT; Quan; Quant; Quantitative; Random; Serum; Spec; SR

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 specific protein 1 (S) [Mass/Vol]Pregnancy specific protein 1 [Mass/volume] in SerumPreg Sp Prot1 Ser-mCncPregnancy specific protein 1CHEMPregnancy specific protein 1, BloodMCnc

Frequently asked questions

Code details

Code2831-6
SystemLOINC
Display namePregnancy specific protein 1 (S) [Mass/Vol]
DescriptionPregnancy specific protein 1
Short namePreg Sp Prot1 Ser-mCnc
ComponentPregnancy specific protein 1
PropertyMCnc
TimingPt
System (specimen)Ser
ScaleQn
ClassCHEM
Example unitsng/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.42

Consumer names

Pregnancy specific protein 1, Blood

Part names

Pregnancy specific protein 1MCncPtSerQnMass ConcentrationPoint in time (spot)Serum

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 2831-6 | HealthAssure