LOINCActiveBoth

LOINC Code 58353-4: Human antihuman Ab (P) [Mass/Vol]

58353-4 is a LOINC code used to identify Human antihuman Ab (P) [Mass/Vol] 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 Human antihuman Ab. It is commonly used with the system or sample type Plas.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Human antihuman Ab. It is commonly used with the system or sample type Plas.

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

  • Human antihuman Ab [Mass/volume] in Plasma
  • Human antihuman Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Chemistry; HAHA; Human anti-human Ab; Human anti-human Ab protein; Level; Mass concentration; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random

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

Human antihuman Ab (P) [Mass/Vol]Human antihuman Ab [Mass/volume] in PlasmaHAHA Ab Plas-mCncHuman antihuman AbCHEMHuman antihuman antibody, BloodMCnc

Frequently asked questions

Code details

Code58353-4
SystemLOINC
Display nameHuman antihuman Ab (P) [Mass/Vol]
DescriptionHuman antihuman Ab
Short nameHAHA Ab Plas-mCnc
ComponentHuman antihuman Ab
PropertyMCnc
TimingPt
System (specimen)Plas
ScaleQn
ClassCHEM
Example unitsmg/dL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.34
Last changed2.70

Consumer names

Human antihuman antibody, Blood

Part names

Human antihuman AbMCncPtPlasQnMass ConcentrationPoint in time (spot)Plasma

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 58353-4 | HealthAssure