Ammonia
Order Code: PNH3
Epic Lab Code: LAB47
Order Form: A-1a General Lab or Epic Req
Chemistry
6240 RCP
356-3527
Specimen:
Plasma
Collection Medium:
Lavender top tube 4 mL (EDTA)
Alternate Collection Media:
Call laboratory for additional acceptable specimen collection containers.
Minimum:
3 mL; lavender top (2 mL lavender top for pediatric patients) lavender top must be half full.
Rejection Criteria:
Syringe is not acceptable.
Delivery Instructions:
Mix well and place on wet ice. Keep on ice and deliver to laboratory immediately.
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Turn Around Time:
1 hour (upon receipt in laboratory)
Reference Range:
7-42 mcmol/l
Test Limitations:
Criterion: recovery within plus or minus 10% of initial values Icterus: No interference up to an I index of 60 (approximate conjugated and unconjugated bilirubin concentration: 60 mg/dL). Hemolysis: No interference up to an H index of 50 (approximate hemoglobin concentration: 50 mg/dL). Lipemia (Intralipid): No interference up to an L index of 170. There is poor correlation between turbidity and triglycerides concentration. Absorbance flagging may also be observed as a result of an absorbance increase.
Methodology:
Enzymatic
CPT Code:
82140
 
See Additional Information:
Specimens Requiring Immediate Delivery