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Test Code DHPR Act Dihydropteridine Reductase Activity

Important Note

This testing replaces PKU Cofactor Variant Screening at Perkin Elmer.

Additional Codes

DHPR

Dihydropteridine Reductase Activity

Clinical System Name

Dihydropteridine Reductase Activity

Synonyms

Dihydropteridine Reductase, Bld

PKU Cofactor

Sample Requirements

Specimen: Whole Blood

Container(s): Dried Blood Spot Card

Preferred Vol:See Comments

Minimum Vol: 2 - 4 full circles of blood

 

Note: Air dry filter paper samples in the dark. Place patient label on PKU card (do not need to fill out State Newborn Screen information such as birthweight or mother's name). Place in a paper envelope (no plastic bags)!

Processing Instructions

Reject due to: NA, forward to Send Outs

Spin: N

Aliquot: N

Temp: RT

Storage location: Allow Blood Spots to air dry in the dark. Place dried Blood Spots and labels in the room temp Send Outs rack.

Stability

Specimen Type Temperature Time
  Room temp  
  Refrigerated  
  Frozen  

 

Availability

STAT Performed TAT
N M - F 0800-1700 12-15 d

 

Performing Laboratory

University of Illinois Medical Center

Biochemical Genetics

820 S. Wood, Rm 337 Bldg 911 CSN

Chicago, IL 60612

 

Phone Number: (312) 995-5326

 

Department

Department: Send Outs

Phone Number: (206) 987-2563

 

Reference Range

Dihydropteridine Reductase, Filter Paper, Blood 1.133 ± 0.345 umol/minute/disc

 

Methodology

Dihydropteridine Reductase, Filter Paper, Blood

Method: Enzyme assay

 

 

 

CPT Codes

82657

Send Out Instructions

 

Reference Test Name:

Dihydropteridine Reductase Activity

Reference Test Number:  
Instructions: Ship to University of Illinois via FedEx.