Chloride, Cerebrospinal Fluid

CPT: 82438
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Test Details

Synonyms

  • Cerebrospinal Fluid Chloride

Use

CSF chloride may be decreased in tuberculous and other types of meningitis.

Methodology

Ion-selective electrode (ISE)

Reference Interval

120−132 mmol/L

Specimen Requirements

Specimen

Cerebrospinal fluid (CSF)

Volume

1 mL

Minimum Volume

0.5 mL

Container

Clean sterile tube

Collection

A CSF specimen is obtained by spinal tap and should be collected in sterile tubes and submitted to the laboratory as soon as possible. Ordinarily, three samples are collected in sterile tubes, labeled sequentially as N° 1 (chemistry and immunology studies), N° 2 (microbiological examination), and N° 3 (cell count and differential). Tubes must be labeled with the patient's full name, date, time of collection, and with the number indicating the sequence in which the tubes were obtained.

Storage Instructions

Maintain specimen at room temperature.

Causes for Rejection

Improper labeling

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
002063 Chloride, Cerebrospinal Fluid 2070-1 002063 Chloride, Cerebrospinal Fluid mmol/L 2070-1

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The LOINC® codes are copyright © 1994-2017, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf