LOINCActiveBoth

LOINC Code 13533-5: Acid hemolysis Ql (Bld)

13533-5 is a LOINC code used to identify Acid hemolysis 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 Acid hemolysis. 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 Acid hemolysis. 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

  • Acid hemolysis [Presence] of Blood
  • Acid hemolysis
  • Acd; Acids; Blood; Ham test; Ham-Dacie acidified serum test; Hamm's test; Ham's acid; Ham's test; Hem; HEMATOLOGY/CELL COUNTS; Ordinal; PNH; Point in time; PR; QL; Qual; Qualitative; Random; Screen; WB; Whole blood

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

Acid hemolysis Ql (Bld)Acid hemolysis [Presence] of BloodAcid hemolysis Bld QlAcid hemolysisHEM/BCAcid hemolysis, BloodPrThr

Frequently asked questions

Code details

Code13533-5
SystemLOINC
Display nameAcid hemolysis Ql (Bld)
DescriptionAcid hemolysis
Short nameAcid hemolysis Bld Ql
ComponentAcid hemolysis
PropertyPrThr
TimingPt
System (specimen)Bld
ScaleOrd
ClassHEM/BC
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0k
Last changed2.73

Consumer names

Acid hemolysis, Blood

Part names

Acid hemolysisPrThrPtBldOrdPresence 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 13533-5 | HealthAssure