Ammonia
Order Name
AMMONIA
Test Number: 2000300
Revision Date 06/17/2026
Test Number: 2000300
Revision Date 06/17/2026
| Test Name | Methodology | LOINC Code |
|---|---|---|
|
Ammonia
|
GLDH/UV | 16362-6 |
| SPECIMEN REQUIREMENTS | ||||
|---|---|---|---|---|
| Specimen | Specimen Volume (min) | Specimen Type | Specimen Container | Transport Environment |
| Preferred | 1 mL (0.5) | Plasma | EDTA (Lavender Top) | Frozen |
| Alternate 1 | 1 mL (0.5) | Plasma | Lithium Heparin PST (Light Green Top) | See Instructions |
| Instructions | Place specimen on ice immediately after drawing, Outpatient Collections Frozen EDTA plasma is preferred separate plasma and freeze within 30 minutes as Frozen P/O Frozen stability 24hrs. Ascension Hospital Collections Lithium Heparin Plasma is prefered, put on ice and deliver to lab immediately. Lithium Heparin Stability 2 hour delay permissible if plasma is separated from cells and kept on ice or refrigerated. |
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| GENERAL INFORMATION | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Testing Schedule | Daily | ||||||||
| Expected TAT | 1-2 days | ||||||||
| Clinical Use | Useful in the diagnosis and treatment of advanced liver disease and hepatic encephalopathy and Reye's Syndrome. | ||||||||
| CPT Code(s) | 82140 | ||||||||
| Internal Comments | 7/11/17 added lav alt spec. - JK 1/23/18 updated specimen transport to Frozen - JK 12/6/19 change processing - JK - from - Place specimen on ice immediately after drawing, separate plasma and freeze within 30 minutes or deliver to lab immediately. Stability: 2 hour delay permissible if plasma is separated from cells and kept on ice or refrigerated. Freeze specimen if not going to be tested within 2 hours of collection. - to - Place specimen on ice immediately after drawing, separate plasma and freeze within 30 minutes or deliver to lab immediately. Stability: 2 hour delay permissible if plasma is separated from cells and kept on ice or refrigerated. Freeze specimen if not going to be tested within 2 hours of collection. Frozen stability 24 hrs 7/1/2020 - JK - change stability with new instument on abbotts.. From: Freeze specimen if not going to be tested within 2 hours of collection. Frozen stability 24 hrs. TO: [(James Webb) -- 07/01/20 09:03:00 AM] Needing the frozen stability changed from 24 hours to 3 weeks on test # 2000300 (Ammonia) 6/17/26 JK change out old instructions -Place specimen on ice immediately after drawing, separate plasma and freeze within 30 minutes or deliver to lab immediately. Stability: 2 hour delay permissible if plasma is separated from cells and kept on ice or refrigerated. Freeze specimen if not going to be tested within 2 hours of collection. Frozen stability 3 weeks.
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| Service Provided By |  |
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| Lab Section | Chemistry | ||||||||