4544-3

Hematocrit [Volume Fraction] of Blood by Automated count

Active

Term Description

This is the test that referral labs will report when hematocrit alone is ordered.

Part Description

LP16699-8   Erythrocyte
Erythrocytes or red blood cells (RBCs) are the cells in the circulation that carry oxygen to and remove carbon dioxide from the tissues throughout the body. They are produced in the bone marrow in response to erythropoietin where they transition through six stages over a seven day period. When they are released into the circulation, their nucleus has been extruded and they measure 6-8 microns in diameter. The lifespan of RBCs is about 120 days. When the RBC ages the cell membrane becomes less pliable and tears as they cell travels through the micro vessels of the body. The damaged RBCs are removed from the circulation by the spleen. Variations in number, shape and size of RBCs are indicative of many diseases and disorders. There are many factors that may lead to decreased numbers of RBCs including hemorrhage, hemolysis, iron or vitamin deficiency, marrow failure and more. Larger than normal RBCs may be indicative of liver disease while smaller than normal RBCs are seen in thalassemias and other anemias.(Mosby's manual of diagnostic and laboratory tests, Kathleen Deska Pagana; Timothy James Pagana, Elsevier St. Louis, Mo ©2010) Source: Regenstrief LOINC

Reference Information

LOINC Names Get Info

Fully-Specified Name

Erythrocyte/Blood:VFr:Pt:Bld:Qn:Automated count

Long Common Name

Hematocrit [Volume Fraction] of Blood by Automated count

Short Name

Hct VFr Bld Auto

Display Name

Hematocrit Auto (Bld) [Volume fraction]

Consumer Name Alpha Get Info

Hematocrit, Blood

Part Model Get Info

• Component

  Erythrocyte/Blood
  LP446465-9

  • Analyte

    Erythrocyte/Blood
    LP446465-9

    • Component Numerator

      Erythrocyte
      LP16699-8

      • Component Numerator Core

        Erythrocyte
        LP16699-8

      • Component Numerator Core Suffix

        NULL
         

    • Component Denominator

      Blood
      LP446464-2

      • Component Denominator Core

        Blood
        LP446464-2

      • Component Denominator Core Suffix

        NULL
         

  • Challenge

    NULL
     

  • Adjustment

    NULL
     

  • Count

    NULL
     

• Property

  VFr
  LP6891-8

• Time

  Pt
  LP6960-1

  • Time Core

    Pt
    LP6960-1

  • Time Modifier

    NULL
     

• System

  Bld
  LP7057-5

  • System Core

    Bld
    LP7057-5

  • Super System

    NULL
     

• Scale

  Qn
  LP7753-9

• Method

  Automated count
  LP6141-8

Related Codes

Basic Attributes

Class

HEM/BC

Type

Laboratory

First Released

Version 1.0

Last Updated

Version 2.79 (NAM)

Change Reason

Release 2.79: COMPONENT: Triggered by Coll w SCT:Hematocrit as a component is not an adequate description for a ratio, therefore Hematocrit is kept as a synonym, and the actual component is expressed as it should be:Erythrocyte/Blood;

Order vs. Observation

Both

Common Test Rank Get Info

28

Member of these Panels

Language Variants Get Info

Related Names

• Auto
• Automated detection
• Blood
• Discocyte
• Elec
• Elect
• Electr
• Erc
• Erythrocytes
• HEMATOLOGY/CELL COUNTS
• Percent
• Point in time
• QNT
• Quan
• Quant
• Quantitative
• Random
• RBC
• Red blood cell
• Red blood cells
• Red blood corpuscle
• Red blood corpusles
• Red cell
• Red cells
• Volfr
• Volume fraction
• WB
• Whole blood

Example Units

LOINC Terminology Service (API) using HL7^® FHIR^® Get Info

Requests to this service require a free LOINC username and password. Below is a sample of the possible capabilities. See the LOINC Terminology Service documentation for more information.

CodeSystem lookup

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=4544-3

LOINC Copyright

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