46087-3

LOINC Code


LOINC code46087-3
name
descriptionA sample of cerebrospinal fluid (CSF) is collected using a procedure called a lumbar puncture or spinal tap. Often, three or more separate tubes of CSF are collected (tube 1, tube 2, tube 3), and multiple tests may be run on the different tubes. Normally no erythrocytes are present in CSF. The presence of red blood cells may indicate bleeding into the CSF or may indicate a "traumatic tap" - blood that leaked into the CSF sample during collection. [Lab Tests Online]
statusACTIVE

Fully-Specified Name

componentErythrocytes^2nd tube
propertyNCnc  =  Number Concentration (count/vol)
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.
systemCSF  =  Cerebral spinal fluid
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
methodManual count

Additional Names

short name#; ABS; absolute; absolutes; Cerebral spinal fluid; Cerebrospinal Fl; Cnt; Count; Count/volume; CT; Discocytes; Erthrocyte; Erythrocyte; HEMATOLOGY/CELL COUNTS; Manl; Number concentration; Number Concentration (count/vol); Point in time; QNT; Quan; Quant;

Basic Attributes

classHEM/BC
type1  Laboratory
order vs. observationRBC tube2 # CSF
example UCUM units10*6/L
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 updated2.83
last change typeMIN  - change to field other than name
change reason/uL

Related Names

N

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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