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Test Code LI Lithium, Serum

Methodology

Spectrophotometric

Performing Laboratory

Huntsville Hospital Laboratory

Specimen Requirements

Draw blood in a plain, red-top tube(s) 8 to 12 hours after last dose (trough specimen). Peak serum concentrations do not correlate with symptoms. Spin down and send 0.5 mL of serum.

Reference Values

Therapeutic concentration:  0.6-1.2 mmol/L (trough concentration)

Critical value:  >2.0 mmol/L

Day(s) Test Set Up

Monday through Sunday

CPT Coding

80178

Secondary ID

HHA1400

LOINC Coding

Test name LOINC Code

Lithium, Serum

14334-7

 

Specimen Stability Information

 

Specimen Type

Temperature

Time

Serum

RT, spun

1 day
 

Refrigerated, spun

7 days

 

Reject Due To

 

Hemolysis

Mild:

ok

Gross:

ok

Lipemia

Mild:

ok

Gross:

ok

Icterus

Mild:

ok

Gross:

ok