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Test Code LAB3882 Arginine Quant - ERT Monitoring

Important Note

Test only permitted for SCH providers & patients.  No outside orders will be accepted.

Specialized tube cannot be used for other testing or add ons.

Clinical System Name

Arginine Quant - ERT Monitoring

Synonyms

Enzyme replacement therapy 

Arginase deficiency

Pegzilarginase therapeutic monitoring

Sample Requirements

Specimen: Whole Blood

Container(s): Nor-NOHA blood collection tube (tubes in BCG lab, collected in infusion)

Preferred Vol:  2 mL

Minimum Vol: 0.5 mL

 

Note: Contains EDTA, 0.1% w/v mannitol, and 9ug/mL Nor-NOHA

 

 

Processing Instructions

Reject due to:

Spin:Y

Aliquot:Y

Temp:-20 C

Storage location: Spin, aliquot with no additive sticker, store in -20 C BCG  Box.  Unique tube type cannot be used for other testing.

 

Off-site collection: n/a

Stability

Temperature Time
Room temp ≤ 2 hr
Refrigerated 24 hrs
Frozen (Plasma/Serum only) 1 month

 

Availability

STAT Performed TAT
N M-F 3 days

 

Contact the Biochemical Genetics Lab for requests outside of stated availability (206)987-2216.

Performing Laboratory

Seattle Children's Laboratory    

Department

Department:  Biochemical Genetics

Phone Number: 206-987-2216

 

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CPT Codes

n/a

Methodology

Method: Ion exchange chromatography with post column derivatization

Analytical Volume: 0.1 mL

Limitations:

Reference Range

Age 0 - 1 mo 1 mo - 5 yr 6 yr - adult
mcmol/L 20 - 125 25 - 125 30 - 130

 

Description

Quantitation of arginine by ion exchange chromatography