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HelpTest Code Ammon AMMONIA
Aliasis
NH3, Blood Ammonia
Patient Preparation
No special patient preparation required
Special Collection Instructions
Collect from stasis free vein. Tube should be completely filled and tightly stoppered. Place immediately on ice for transport to lab. Must be separated from cells via centrifugation if testing delayed >30 minutes.
If shipping from a location outside of the hospital, please separate plasma from cells and freeze plasma before shipping.
Minimum Volume
1.0 mL
Container
Lt Green or Purple (EDTA)
Preferred Specimen
Plasma (lithium heparin, potassium EDTA)
Acceptable Specimen(s)
Lt Green or Purple top (K2 EDTA)
Reference or Target Ranges
11-32 umol/L for Adults
Reportable Units
umol/L
Critical Value
N/A
Reasons for Rejection
|
Hemolysis Threshold: |
375 mg/dL |
|
Icterus Threshold: |
60 mg/dL |
|
Lipemia Threshold: |
200 mg/dL |
|
Dextran 40 |
1500 mg/dL |
|
Immunoglobulin G |
5 g/dL |
|
Other: |
QNS, contaminated, improperly labeled, improper specimen type |
Specimen Stability
Separated specimens may be stored for up to 2 hours at 2-8 C. The tube should be completely filled, stored tightly capped on ice and centrifuged without delay. Samples should be analyzed within 30 minutes of centrifugation.
|
Ambient |
N/A |
|
Refrigerated (4oC to 8oC) |
2 Hours (plasma removed from cells) |
|
Frozen |
N/A |
Performance Information
|
Days and Time Performed |
24/7 |
|
Expected Turn Around Time |
STAT: 1 hour, Routine: 4 hours |
|
Stat Availability |
Yes |
|
Performing Bench |
CRMC Chemistry |
|
Methodology/Method Description |
Atellica |
Additional Information / Important Notes
No backorders. Cannot share with other tests.
Special Handling
Plasma must be separated from cells within 30 minutes.
Must be received on ice.
Thaw only once.
Methodology/Method Description
Atellica CH Analyzer
CPT Codes
82140