LOINCActiveObservation

LOINC Code 107557-1: Test performed --1st trimester

107557-1 is a LOINC code used to identify Test performed --1st trimester 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 Test performed^1st trimester. It is commonly used with the system or sample type ^Patient.

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 Test performed^1st trimester. It is commonly used with the system or sample type ^Patient.

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

  • Test performed --1st trimester
  • Test performed^1st trimester
  • Finding; Findings; First; OBGYN; Ordinal; Point in time; QL; Qual; Qualitative; Random; Screen

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

Test performed --1st trimesterTest performed 1st trimesterTest performed^1st trimesterOBGYNFindPt^Patient

Frequently asked questions

Code details

Code107557-1
SystemLOINC
Display nameTest performed --1st trimester
DescriptionTest performed^1st trimester
Short nameTest performed 1st trimester
ComponentTest performed^1st trimester
PropertyFind
TimingPt
System (specimen)^Patient
ScaleOrd
ClassOBGYN
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.81
Last changed2.81

Part names

Test performed^1st trimesterFindPt^PatientOrdFindingPoint in time (spot)

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 107557-1 | HealthAssure