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Ammonia
Test CodeLAB47
CPT Codes
82140
Preferred Specimen
3 mL EDTA (lavender-top) tube of whole blood
Minimum Volume
0.5 ml plasma
Other Acceptable Specimens
1mL EDTA plasma
Instructions
If specimen cannot be tested immediately,centrifuge and separate plasma within 30 minutes of draw
Transport Container
leak-proof transport vial
Transport Temperature
Frozen
Specimen Stability
Room Temperature: Unacceptable
On Ice: 30 minutes
Refrigerated: Separated plasma 2 hours
Frozen: Separated plasma 72 hours
On Ice: 30 minutes
Refrigerated: Separated plasma 2 hours
Frozen: Separated plasma 72 hours