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HelpTest Code LAB3785 Biopterin Metabolites, Urine
Clinical System Name
Biopterin Metabolites, Urine
Sample Requirements
Specimen: Urine
Container(s): Sterile Screw-Capped Container (PROTECT FROM LIGHT)
Preferred Vol: 10.0 mL
Minimum Vol: 5.0 mL
Note: Protect sample from light and send to Main Lab immediately.
Processing Instructions
Reject due to: Exposure of urine to light or clear urine container without light protection.
Spin: N
Aliquot: Y (Aliquot into amber vial)
Temp: -20 C
Storage Location: Place light-protected urine sample in the -20 CPA freezer, Send Outs rack.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Room Temp | ||
| Refrigerated | ||
| Frozen |
Performing Laboratory
Children's Hospital Los Angeles (CHLA)
Department of Pathology and Laboratory Medicine
Duque Building, 2nd Floor, Room 2-290
4650 Sunset Blvd.
Los Angeles, CA 90027
Phone Number: (323) 361-2423
Department
Department: Send Outs
Phone Number: (206) 987-2563
Synonyms
Biopterin; Neopterin; PKU Cofactor; Pteridine Profiling, Urine; Pterins; PterinsUr; Urine Pterins
Availability
| STAT | Performed | TAT |
|---|---|---|
| N | M - F | 7 d |
Methodology
Method: High performance liquid chromatography (HPLC), Fluorescent Detection
Analytical Volume: 5.0 mL Light-Protected Urine
Limitations:
Reference Range
Results are presented in a diagram form. Total neopterin and biopterin levels are reported. Normal values at different ages are given.
CPT Codes
82542
Send Out Instructions
| Reference Test Name: |
Biopterin Metabolites, Urine |
| Reference Test Number: | N/A |
| Instructions: | Ship Monday - Thursday to Children's Hospital Los Angeles via FedEx. Saturday delivery is not acceptable. |