Specimen:

Whole Blood

Collection Medium:

Alternate
Collection Media:

Yellow top tube (ACD solution A)

Minimum:

Draw 10 mL whole blood drawn suggested late in the day (3:00 p.m.)
Blood spots: 3 spots on INMS card

Rejection Criteria:

Blood MUST reach reference laboratory within 24 hours of collection; 
collect Monday through Thursday only; do not collect on Fridays, 
holidays, day before a holiday, or weekends.

Delivery Instructions:

Submit specimen to laboratory as soon as possible after collection.

Analytic Time:

2 weeks

Reference Range:

Interpretive report provided.

Comments:

You must print, complete and submit the Biochemical Genetics Service 
Request with the A-1a Miscellaneous Requisition.

Test name at reference laboratory: PPT ENZ and TPP (upper right hand 
of requisition).

Methodology:

Enzymatic/Fluorometric

CPT Code:

82657(x2)