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Test Code LAB47 Ammonia, Plasma

Reporting Title

Ammonia

Methodology

Roche Diagnostics: RMH, BH, DH, DHC, DMH, GCMH, GMC, GMH, MGH, MH, OBH, PMH, WECC, HMH, SH

Ammonia is elevated in severe liver diseases such as cirrhosis, hepatitis, and Reye’s syndrome.

 

VWH Lab Only:

AMM reagent, when used in conjunction with SYNCHRON LX® System(s), UniCel® DxC 860i System(s) and SYNCHRON® Systems Ammonia Calibrators, is intended for the quantitative determination of Ammonia concentration in human plasma.

Performing Laboratory

OhioHealth Laboratory Services - RMH, BH, DH, DHC, DMH, GCMH, GMC, GMH, HMH, MGH, MH, OBH, PMH, SH, WECC and VWH Core Laboratories

Specimen Requirements

INPATIENT: Draw blood in a lavender-top (EDTA) tube(s) and send to the lab within 30 minutes on ice. 

OUTPATIENT: Draw blood in a lavender-top (EDTA) tube (s) and place on ice. Centrifuge within 30 minutes of draw and send 1 mL of EDTA plasma frozen in plastic vial.  Avoid hemolysis.

Sample Stability Information:

Separated plasma 3 hours refrigerated in a stoppered container at RMH, GMC, DH, DMH, GCMH, WECC, and DMH

Freeze specimen for longer storage or shipment

 

VWH Lab Only: 

Collect in Mint Green Lithium Heparin Tube 1 ML, on ice.

Tubes should be filled completely, mixed gently by inversion, placed on ice, centrifuged immediately for 10 minutes at an RCF of 1500G and analyzed within 30 minutes. Samples should not be frozen. The tubes should be tightly stoppered at all times.

Specimen Transport Temperature

Frozen: OK

Refrigerate: NO

Ambient: NO

Reference Values

0-10 days:  100-200 Micromol/L

11 days-2 years:  40-80 Micromol/L

≥3 years:  12-47 Micromol/L

 

VWH Lab Only:

Plasma 9 – 35 µmol/L

 

 

 

Day(s) Test Set Up

Monday through Sunday- Continuously

 

Test Classification and CPT Coding

82140