LOINCActiveBoth

LOINC Code 33310-4: Phosphatidylserine Ab Ql (S)

33310-4 is a LOINC code used to identify Phosphatidylserine Ab Ql (S) 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 Phosphatidylserine Ab. It is commonly used with the system or sample type Ser.

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 Phosphatidylserine Ab. 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

  • Phosphatidylserine Ab [Presence] in Serum
  • Phosphatidylserine Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; aPS; Autoantibodies; Autoantibody; COAGULATION; Hematology; Heme; Ordinal; Phosphatidyl serine; Point in time; PR; PS; Ql; Qual; Qualitative; Random; Screen; Serum; 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

Phosphatidylserine Ab Ql (S)Phosphatidylserine Ab [Presence] in SerumPS Ab Ser QlPhosphatidylserine AbCOAGPhosphatidylserine antibody, BloodPrThr

Frequently asked questions

Code details

Code33310-4
SystemLOINC
Display namePhosphatidylserine Ab Ql (S)
DescriptionPhosphatidylserine Ab
Short namePS Ab Ser Ql
ComponentPhosphatidylserine Ab
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
ClassCOAG
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.09
Last changed2.73

Consumer names

Phosphatidylserine antibody, Blood

Part names

Phosphatidylserine AbPrThrPtSerOrdPresence or ThresholdPoint 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 33310-4 | HealthAssure