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Test Code Billings Clinic: 4004 Chloride, Plasma

Performing Laboratory

Billings Clinic Laboratory: Chemistry

Useful For

Evaluation of water, electrolyte, and acid-base status

Methodology

A-LYTE® Integrated Multisensor Technology (IMT)

Specimen Requirements

Submit only 1 of the following specimens:

Serum or plasma should be physically separated from cells as soon as possible with a maximum limit of two hours from the time of collection.

 

Plasma

  • Draw blood in a green-top (lithium heparin) tube(s).
  • Spin down and send 1.0 mL of heparinized plasma frozen.

 

Serum

  • Draw blood in a plain, red-top tube(s) or a serum gel tube(s).
  • Spin down and send 1.0 mL of serum frozen

Storage/Stability

Specimen Type Temperature Time
Plasma, Serum Refrigerated 7 days
  Frozen (preferred) 1 month

 

Reject Due To

  • Specimens drawn in the incorrect tube

Reference Values

0 - 6 months        97 - 108 mEq/L

6 - 12 months      97 - 106 mEq/L

> 1 year               98 - 110 mEq/L

Day(s) Test Set Up

Daily

Test Classification and CPT Coding

82435 - Chloride; blood

LOINC Code Information

Reporting Name

LOINC Code

Chloride, Blood

 2075-0

 

Interferences

  • Citrate at 1 g/dL decreases the chloride result in serum/plasma at 82.4 mmol/L (82.4 mEq/L) by -12%.
  • Fluoride at 1 g/dL increases the chloride result in serum/plasma at 81.7 mmol/L (81.7 mEq/L) by 40% and 101 mmol/L (101 mEq/L) by 55%.
  • Iodine at 50 mg/dL increases the chloride result in serum/plasma at 82.2 mmol/L (82.2 mEq/L) by 16%.
  • Bromide at 200 mg/dL increases the chloride result in serum/plasma at 82.1 mmol/L (82.1 mEq/L) by 55% and 101 mmol/L (101 mEq/L) by 36%.
  • Salicylate at 50 mg/dL increases the chloride result in serum/plasma at 98.5 mmol/L (98.5 mEq/L) by 11% and 101 mmol/L (101 mEq/L) by 12%.