77454-7

LOINC Code


LOINC code77454-7
name
descriptionT-score = (BMD - MEAN_BMD) / SD, where BMD = subject's bone mineral density (BMD), MEAN_BMD = mean BMD of reference population, and SD = standard deviation of BMD within reference population.
statusDEPRECATED
Replacements

alternatives to this code:

38266-3

Fully-Specified Name

componentBone density
propertyTscore  =  T Score
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.
systemHindfoot+Midfoot
scaleQn  =  Quantitative:  The result of the test is a numeric value that relates to a continuous numeric scale. Reported either as an integer, a ratio, a real number, or a range. The test result value may optionally contain a relational operator from the set {<=, <, >, >=}. Valid values for a quantitative test are of the form "7", "-7", "7.4", "-7.4", "7.8912", "0.125", "<10", "<10.15", ">12000", 1-10, 1:256
methodXR.DXA

Additional Names

short nameBMD; Bone Densiometry; Bone Densitometry; Bone Density Scan; Calcaneous; Calcaneus; Den; Densiometry; Densitometry; DEX; DEXA; Dual Energy X Ray Absorptiometry; Dual Energy Xray Absorptiometry; DXA; Heel; Hind+Mid ft; Imaging; Plain Films; Point in time;

Basic Attributes

classRAD
type2  Clinical
order vs. observationDeprecated Hind
example UCUM unitsTscore
The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business (www.unitsofmeasure.org)

History/Usage

first released
last updated2.58
last change typeDEL  - delete (deprecate)
change reason{Tscore}

Related Names



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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