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Test Code 0200485 Ammonia, Plasma

Important Note

Important Notice: Frozen specimens are EDTA Plasma ONLY!  If not testing immediately, separate and freeze as instructed below under Specimen Requirements.

Methodology

Glutamate Dehydrogenase

Performing Laboratory

Alomere Health Hospital Laboratory

Specimen Requirements

Specimen Type: Venous plasma

Collection Container/Tube: Green top (lithium or sodium heparin), lavender (EDTA)

Specimen Volume: 2.0 mL

Specimen Minimum Volume: 0.2 mL

Collection Instructions:

  1. Limited or no tourniquet usage.
  2. Tube should be completely filled.
  3. Place on wet ice immediately.
  4. Centrifuge specimen within 15 minutes of collection at 5° C (pre-chilled centrifuge cup) for 10 minutes at 3,300 rpm. Keep tube tightly stoppered. 
  5. EDTA plasma only: If not testing immediately, separate and freeze.

 

Reject Due To

Hemolysis:  1+

Lipemia:  1+

Specimen Transport Temperature

Refrigerated - 2 hours

Frozen (EDTA Plasma only) - 24 hours

Reference Values

18 - 72 mcmol/L

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

82140