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Ammonia Level

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Plain Green Tube (Heparinized Plasma)

Specimen Requirements

Preferred:
Container/Tube: Plain Green Tube (Heparinized Plasma)
Minimum Volume: Tube MUST be Completely filled.
Collection Instructions: Must collect on ice. Tube MUST be COMPLETELY filled. Must arrive at Laboratory within 30 minutes of collection. Collect in a plain green top tube without the separator gel.

  • TUBE MUST BE FILLED AND THE CAP REMAIN ON OR TEST IS INVALID *
    (Filled pediatric tubes are acceptable.)

Specimen Stability

Ambient: N/A
Refrigerate: N/A
Frozen: 30 minutes On Ice

Reference Range

0-2 Weeks: <90 umol/L
2 weeks-18 Years: <50 umol/L
>18 Years: 9-35 umol/L

Methodology

Enzymatic Rate

CPT

82140

Test Alias

NH3

Lab Handling

Spin and run immediately.