LOINCBoth

LOINC Code 13065-8: Platelet Ab.circulating Qn (S)

13065-8 is a LOINC code used to identify Platelet Ab.circulating Qn (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 Platelet Ab.circulating. 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 Platelet Ab.circulating. 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: DEPRECATED
  • Order vs observation: Both

What it does not mean

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

Key facts

  • Deprecated Platelet Ab [Units/volume] in Serum
  • Platelet Ab.circulating
  • Arbitrary concentration; Circ; Circulating platelet ab; Pl; Platelet ab.free; Platelet auto-antibodies; Platelets; Platelt; Plt; Point in time; QNT; Quan; Quant; Quantitative; Random; Serology; Serum; SR; Thrombocyte; Thrombocytes

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

Platelet Ab.circulating Qn (S)Deprecated Platelet Ab [Units/volume] in SerumDeprecated Platelet Ser-aCncPlatelet Ab.circulatingSEROPlatelet Ab.circulating, BloodACnc

Frequently asked questions

Code details

Code13065-8
SystemLOINC
Display namePlatelet Ab.circulating Qn (S)
DescriptionPlatelet Ab.circulating
Short nameDeprecated Platelet Ser-aCnc
ComponentPlatelet Ab.circulating
PropertyACnc
TimingPt
System (specimen)Ser
ScaleQn
ClassSERO
StatusDEPRECATED
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.69

Consumer names

Platelet Ab.circulating, Blood

Part names

Platelet Ab.circulatingACncPtSerQnArbitrary 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 13065-8 | HealthAssure