LOINC

LOINC Code 2438-0: Hydrogen sulfide Ql (Bld)

2438-0 is a LOINC code used to identify Hydrogen sulfide 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 Hydrogen sulfide. 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 Hydrogen sulfide. 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: DEPRECATED

What it does not mean

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

Key facts

  • Deprecated Hydrogen sulfide
  • Hydrogen sulfide
  • Blood; Chemistry; H2; H2S; Hyd; Level; Mass concentration; Ordinal; Point in time; 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

Hydrogen sulfide Ql (Bld)Deprecated Hydrogen sulfideDeprecated Hydrogen Sulfide Bld QlHydrogen sulfideCHEMHydrogen sulfide, BloodMCnc

Frequently asked questions

Code details

Code2438-0
SystemLOINC
Display nameHydrogen sulfide Ql (Bld)
DescriptionHydrogen sulfide
Short nameDeprecated Hydrogen Sulfide Bld Ql
ComponentHydrogen sulfide
PropertyMCnc
TimingPt
System (specimen)Bld
ScaleOrd
ClassCHEM
StatusDEPRECATED

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.36

Consumer names

Hydrogen sulfide, Blood

Part names

Hydrogen sulfideMCncPtBldOrdMass ConcentrationPoint 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 2438-0 | HealthAssure