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Test Code Li Lithium Level

Patient Preparation

No special patient preparation required

Special Collection Instructions

Do not collect in lithium heparin. Separate from cells if more than 4 hour delay is expected.

Collection Method

Venous collection

Minimum Volume

  • Adults: 0.8 mL
  • Pediatric: 0.5 mL

Container

Gold Top / Serum Separator / Additive Free

Preferred Specimen

Gold Top SST

Acceptable Specimens

Serum:

  • Gold Top SST
  •  
  • Red Top


Plasma:

 

  • Purple or Pink top (K2/K3 EDTA)
  • Dark Green Top (sodium heparin)

 

Reference or Target Ranges

Therapeutic Expected Value 0.6 – 1.2 mmol/L

Reportable Units

mmol/L

Critical Value

≥2.0 mmol/L

Reasons for Rejection

 


<!-- Rejection-->

 

Hemolysis Threshold 750 mg/dL
Icterus Threshold 40 mg/dL
Lipemia Threshold 500 mg/dL
Other QNS, contaminated, improperly Labeled, improper specimen type

Specimen Stability

 


<!-- Stability -->

 

Ambient 24 hours
Refrigerated (4°C to 8°C) 7 days
Frozen(-40°C to 0°C) 6 months

Performance Information

 


<!-- Performance information -->

 

Days and Time Performed 24/7
Expected Turn Around Time Stat: 1 hour
Routine: 4 hours
Stat Availability Yes
Performing Bench UH Chemistry
Methodology/Method Description Siemens Atellica - Colorimetric Assay

CPT Codes

80178