Copper free/Total copper in Serum or Plasma by calculation   96463-5

LOINC Code


LOINC code96463-5
nameCopper free/Total copper in Serum or Plasma by calculation
descriptionA free copper level is calculated based on the difference between total copper and ceruloplasmin measurements, where the ceruloplasmin level represents the bound portion of circulating copper. In patients with Wilson's disease that is pre-symptomatic or adequately controlled, the free copper level is within normal range, but in symptomatic patients, it is typically elevated. Increasing free copper levels in a patient with previously normal levels may indicate a change in compliance with therapy or a growth spurt or change in diet requiring therapy adjustment. [PMID: 12662398] This term represents the calculated result for free copper level as a fraction of the total copper measurement.
statusACTIVE

Fully-Specified Name

componentCopper.free/Copper.total
propertyMFr  =  Mass 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.
systemSer/Plas
    Ser  =  Serum
    Plas  =  Plasma
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
methodCalculated

Additional Names

short nameCopper free/Total copper MFr SerPl Calc

Basic Attributes

classDRUG/TOX
type1  Laboratory
order vs. observationBoth
formula (readable)(Total copper - ceruloplasmin)/Total copper
example UCUM units%
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)
example unit%

Associated Observations

LOINC codes that represent optional associated observation(s) for a clinical observation or laboratory test. A LOINC term may represent a single associated observation or panel containing several associated observations.

History/Usage

first released
last updated2.69
last change typeADD  - added

Related Names

Calc
Calculation
Copper free
Cu
DRUG/TOXICOLOGY
Drugs
FR
Mass fraction
Non-protein bound
Percent
Pl
Plasma
Plsm
Point in time
QNT
Quan
Quant
Quantitative
Random
SerP
SerPl
SerPlas
Serum
Serum or plasma
SR
Tot
Total copper
Totl

Copyright © 2024 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2024, 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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