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HelpTest Code LAB59 Chloride Level
Clinical System Name
Chloride Level
Description
Chloride is increased in dehydration, renal tubular acidosis (hyperchloremia metabolic acidosis), and in excessive infusion of isotonic saline. Chloride is decreased in overhydration, chronic respiratory acidosis, salt-losing nephritis, metabolic alkalosis, and congestive heart failure.
Sample Requirements
Specimen: Whole Blood
Container(s): Lt. Green/Mint Top Lithium Heparin, Lt. Green/Lithium Heparin Microtainer, Gold SST, Gold Microtainer, Dark Green/Sodium Heparin, Red, or Heparinized Syringe
Preferred Vol: 1.0 mL
Minimum Vol: 0.5 mL
Note: Method is affected by EDTA and prolonged exposure to RBCs. Specimen must be spun and aliquot within 2 hours. Not affected by Na, Li or Ammon. heparin.
Processing Instructions
Reject due to: Age of specimen, incorrect specimen collection (No EDTA).
Spin: Y
Aliquot: Y
Storage location: Core 5 Chemistry Refrigerator
Off-site collection: Specimen should be centrifuged within 2 hours of collection. Spin blood and transfer serum or plasma to plastic tube and refrigerate or freeze.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum or Plasma | RT |
≤ 7 d |
| Serum or Plasma | 2-8 C |
≤ 28 d |
| Serum or Plasma | -20 C or -70 C |
≤ 365 d |
Performing Laboratory
Seattle Children's Laboratory
Department
Department: Core Chemistry
Phone Number: 206-987-2617 (Client Services)
Synonyms
LAB59
Cl - Blood (Chloride - Blood)
Availability
| STAT | Performed | TAT |
|---|---|---|
| Y | 24/7 | 1 h |
Methodology
Method: Potentiometric method by Vitros 4600
Analytical Volume: 0.05 mL serum or plasma
Limitation: Potassium Bromide causes positive interference with assays that use direct or indirect ion selective electrodes.
Reference Range
| Age | mEq/L |
| <1 y | 96 - 110 |
| 1 y - adult | 96 - 109 |
CPT Codes
82435
Critical Values
≤ 70 mEq/L
≥ 130 mEq/L