LOINCActiveBoth

LOINC Code 57096-0: HPA 1a/1a+HPA 3a/3a Ql (Bld)

57096-0 is a LOINC code used to identify HPA 1a/1a+HPA 3a/3a Ql (Bld) 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 HPA 1a-1a+HPA 3a-3a. It is commonly used with the system or sample type Bld.

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 HPA 1a-1a+HPA 3a-3a. It is commonly used with the system or sample type Bld.

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

  • HPA 1a/1a+HPA 3a/3a [Presence] in Blood
  • HPA 1a-1a+HPA 3a-3a
  • Blood; HPA 1a/1a+HPA 3a-/3a; HPA antigen; HPA-1a; Human Platelet Antigen; Ordinal; Pl-a1; Point in time; PR; QL; Qual; Qualitative; Random; Screen; WB; Whole blood; Zw-a

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

HPA 1a/1a+HPA 3a/3a Ql (Bld)HPA 1a/1a+HPA 3a/3a [Presence] in BloodHPA 1a/1a+HPA 3a-/3a Bld QlHPA 1a-1a+HPA 3a-3aHPAHPA 1a/1a+HPA 3a/3a, BloodPrThr

Frequently asked questions

Code details

Code57096-0
SystemLOINC
Display nameHPA 1a/1a+HPA 3a/3a Ql (Bld)
DescriptionHPA 1a-1a+HPA 3a-3a
Short nameHPA 1a/1a+HPA 3a-/3a Bld Ql
ComponentHPA 1a-1a+HPA 3a-3a
PropertyPrThr
TimingPt
System (specimen)Bld
ScaleOrd
ClassHPA
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.29
Last changed2.73

Consumer names

HPA 1a/1a+HPA 3a/3a, Blood

Part names

HPA 1a-1a+HPA 3a-3aPrThrPtBldOrdHPA 1a/1a+HPA 3a/3aPresence or ThresholdPoint in time (spot)Blood

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 57096-0 | HealthAssure