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This is a sendout test. Please note that turnaround time is defined as the anticipated time from set up day to results release.
S51468: Ammonia, Plasma [5509x] Print View
Ammonia (P) ENZYMATIC    umol/L 

PRIMARY
1 Plasma EDTA 2 (0.5) mL   Frozen - 72 Hour(s)  
ALTERNATE

Ammonia is one of the by-products of protein metabolism. Elevated blood ammonia levels have been associated with severe liver dysfunction such as hepatic encephalopathy, coma resulting from cirrhosis, severe hepatitis, Reye's syndrome, and drug hepatotoxicity. Also, elevated blood ammonia has been reported in cardiac failure, azotemia, and pulmonary emphysema. Correlation between plasma ammonia and the degree of encephalopathy can be erratic.

Collect blood from stasis-free vein of patient (e.g., no tourniquet).
Patient should not clench fist during collection, as muscular exertion
often increases venous ammonia levels. Patient should avoid smoking
prior to phlebotomy since smoking increases plasma ammonia levels.
Tubes should be filled completely and kept tightly stoppered at all
times. Place immediately on ice. Separate plasma from cells within 15
minutes and freeze plasma immediately.
Setup Schedule
Monday-Saturday

Reported (Analytical Time)
Same day

CPT Code
82140

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Notes
Transport Temperature: Frozen
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen -20 degrees Celsius: 72 hours
Frozen -70 degrees Celsius: 7 days
Reject Criteria: Hemolysis; lipemia; received thawed; PPT Potassium EDTA (white-top) tube






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