2029-7

LOINC Code


LOINC code2029-7
name
statusDEPRECATED

Fully-Specified Name

componentCarboxyhemoglobin
propertySFr  =  Substance Fraction
timePt  =  Point in time:  To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
systemRBC  =  Erythrocytes
scaleOrd  =  Ordinal:  Ordered categorical responses, e.g., 1+, 2+, 3+; positive, negative; reactive, indeterminate, nonreactive.
method

Additional Names

short nameCarbon monoxide.hemoglobin; Carbonmonoxyhemoglobin; Carbonyl haemoglobin; Carbonyl hemoglobin; Carbonyl Hgb; Carboxyhaemoglobin; Carboxyhemoglob; Chemistry; CO haemoglobin; CO hemoglobin; COHb; COHgb; Erythrocytes; HbCO; Hemoglobin bound with carbon dioxi

Basic Attributes

classCHEM
type1  Laboratory
order vs. observationDeprecated COHg

History/Usage

first released
last updated2.46
last change typeDEL  - delete (deprecate)

Related Names


hierarchy paths
LOINC Home
   {component}   LP432695-7
      Laboratory   LP29693-6
         Chemistry and Chemistry - challenge   LP343631-0
            Chemistry - non-challenge   LP7786-9
               Gases and acid/Base   LP31400-2
                  Carboxyhemoglobin   LP21418-6
                     Carboxyhemoglobin | Red Blood Cells | Chemistry - non-challenge   LP383346-6
LOINC Home
   {component}   LP432695-7
      Laboratory   LP29693-6
         Chemistry and Chemistry - challenge   LP343631-0
            Chemistry - non-challenge   LP7786-9
               Gases and acid/Base   LP31400-2
                  Dyshemoglobin   LP31772-4
                     Carboxyhemoglobin   LP21418-6
                        Carboxyhemoglobin | Red Blood Cells | Chemistry - non-challenge   LP383346-6

Copyright © 2026 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2026, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.

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