Test Overview
Test Methodology

Spectrophotometry

Test Usage

Diagnose dihydropteridine reductase deficiency

Reference Range *

3.0 - 8.6 nmol/min/disc

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Monday - Friday
Analytic Time

7 days

Soft Order Code
LADHR
Synonyms
    Laboratory
    Sendout
    Reference Laboratory
    Children's Hospital Los Angeles
    Section
    Special Testing
    Specimen Requirements
    Collection Instructions

    Blood spot card, provided by clinic to patient family for draw; alternatively, a green top (sodium heparin) tube may be used. Send to Specimen Processing room temp

    Normal Volume
    5 spots on card or 2 mL whole blood
    Minimum Volume
    3 spots on card or 1 mL whole blood
    Storage Temperature
    Ambient or refrigerated
    Additional Information

    Test performed by Children's Hospital Los Angeles, Biochemical Genetics/Special Chemistry Lab

    Billing
    CPT Code
    82657
    NY State Approved
    No