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959: Tryptophan, LC/MS Print View
DATE OF BIRTH      
Tryptophan, LC/MS LC/MS    umol/L 

PRIMARY
1 Plasma Sodium Heparin Grn 2 (0.25) mL   Refrigerated - 7 Day(s)/Frozen - 30 Day(s)  
ALTERNATE
  Plasma EDTA 2 (0.25) mL   Frozen - 30 Day(s)/Refrigerated - 7 Day(s)  
  Plasma Lithium Heparin 2 (0.25) mL   Refrigerated - 7 Day(s)/Frozen - 30 Day(s)  

Please Note: Serum is not an accepted specimen type.
Plasma should be separated from cella as soon as possible after
collection. Freeze plasma below -20 degrees C. Collect plasma
specimens after an overnight fast (or at least 4 hours after meal).
Non-fasting samples are acceptable for pediatric patients.

2 mL (0.25 mL minimum) plasma
Setup Schedule
Monday

Reported (Analytical Time)
3 days

CPT Code
82131

The CPT codes provided 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 payer being billed.

Notes
Transport Temperature: Frozen

Rejection Criteria: Gross hemolysis, Received room temperature

Methodology: Chromatography/ Mass Spectrometry






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