Ammonia, Plasma

Message

See specimen stability for guidance when drawing specimens at a location other than McKee Medical Center, North Colorado Medical Center, or Banner Fort Collins Medical Center.

Test Code

AMON - NOCO

CPT Codes
82140

Preferred Specimen

1 full Lavender (EDTA) tube or seperated EDTA plasma

Minimum Volume

0.5 mL
Note: For neonate requirements see Neonate Minimum Blood Volumes

Instructions

Transport to lab on crushed ice.
Specimen must arrive to the lab within 20 minutes of draw

Transport Temperature

Refrigerated

Specimen Stability

Plasma EDTA

Room Temp

30 minutes

Plasma EDTA (separated)

2-8°C

2 hours

Plasma EDTA (separated)

-20°C

3 days

*Specimens drawn at Summit View (West ED) or other draw sites may be sent to a performing laboratory if plasma is seperated from the cells within 20 minutes of draw and transported to the appropriate lab, refrigerated, and within 2 hours.

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Gross hemolysis, wrong specimen type for performing laboratory

Methodology
Glutemate Dehydrogenase Enzymatic Bichromatic Rate

Setup Schedule

Monday through Sunday; Continuously

Report Available

Same day

Reference Range

Males: ≤60 µmol/L
Females: ≤51 µmol/L
Critical value (automatic call-back) for 0 days to 1 month old: >150 µmol/L

Performing Laboratory
Banner Fort Collins Medical Center Laboratory
Mckee Medical Center Laboratory
North Colorado Medical Center Laboratory

The CPT Codes provided in this document 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 payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.