LOINCActiveObservation

LOINC Code 97555-7: Hemoglobin Oximetry (BldCV) [Mass/Vol]

97555-7 is a LOINC code used to identify Hemoglobin Oximetry (BldCV) [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 Hemoglobin. It is commonly used with the system or sample type BldCV.

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 Hemoglobin. It is commonly used with the system or sample type BldCV.

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: Observation
  • Method: Oximetry

What it does not mean

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

Key facts

  • Hemoglobin [Mass/volume] in Central venous blood by Oximetry
  • Hemoglobin
  • Haemoglobin; Hb; HEMATOLOGY/CELL COUNTS; Hgb; Level; Mass concentration; 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

Hemoglobin Oximetry (BldCV) [Mass/Vol]Hemoglobin [Mass/volume] in Central venous blood by OximetryHgb BldCV Oximetry-mCncHemoglobinHEM/BCHemoglobin, BloodMCnc

Frequently asked questions

Code details

Code97555-7
SystemLOINC
Display nameHemoglobin Oximetry (BldCV) [Mass/Vol]
DescriptionHemoglobin
Short nameHgb BldCV Oximetry-mCnc
ComponentHemoglobin
PropertyMCnc
TimingPt
System (specimen)BldCV
ScaleQn
MethodOximetry
ClassHEM/BC
Example unitsg/L
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Hemoglobin, Blood

Part names

HemoglobinMCncPtBldCVQnOximetryMass ConcentrationPoint in time (spot)Blood central venous

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 97555-7 | HealthAssure