Test Details
Mnemonic
PRCAL
Ordering Code
3689100
CPT-4 Code(s)
84145
Specimen Information
Collect
Red top
Specimen Preparation
Allow sample to clot 15-20 minutes. Centrifuge serum at 2000 rpm for 10 minutes and within 1
hour of collection, immediately transfer 2.0 mL serum into a screw capped plastic vial.
hour of collection, immediately transfer 2.0 mL serum into a screw capped plastic vial.
Alternate Specimen
Plasma: Green lithium or sodium heparin, lavender EDTA
Minimum Volume
0.5 mL
Transport Temperature
Frozen
Rejection Criteria
Plasma: Citrate, EDTA
Stability
Room temperature: Unacceptable
Refrigerated: 5 days
Frozen: 28 days
Refrigerated: 5 days
Frozen: 28 days
Methodology
Immunofluorescence Assay (IFA)
Reference Range
Ages ng/mL
At birth <2.00
18 – 20 hours <20.00
48 hours <5.00
>48 hours <0.10
At birth <2.00
18 – 20 hours <20.00
48 hours <5.00
>48 hours <0.10
Performing Laboratory
Quest SJC
New York DOH Approval Status
Yes