Test Details
Mnemonic
PREGN
Ordering Code
3421600
CPT-4 Code(s)
84140
Specimen Information
Collect
Red top
Specimen Preparation
Allow blood to clot 30 minutes at room temperature 18°C - 25°C. Centrifuge, separate serum from cells and send 0.5 mL serum in a screw capped plastic vial.
Minimum Volume
0.2 mL
Transport Temperature
Frozen
Rejection Criteria
Serum separator tube (SST), hemolyzed specimens
Stability
Room temperature: Unacceptable
Refrigerated: 72 hours
Frozen: 14 days
Frozen (-70°C): 30 days
Refrigerated: 72 hours
Frozen: 14 days
Frozen (-70°C): 30 days
Methodology
LC-Mass Spectrometry/Mass Spectrometry
Reference Range
Adult: 22 - 237 ng/dL
1 day - 59 days: 68 - 1303 ng/dL
60 days – 1 year: ≤ 219 ng/dL
2 years – 6 years: ≤ 140 ng/dL
7 years – 9 years: ≤ 156 ng/dL
10 years – 12 years: 15 - 220 ng/dL
13 years – 17 years: 12 - 196 ng/dL
1 day - 59 days: 68 - 1303 ng/dL
60 days – 1 year: ≤ 219 ng/dL
2 years – 6 years: ≤ 140 ng/dL
7 years – 9 years: ≤ 156 ng/dL
10 years – 12 years: 15 - 220 ng/dL
13 years – 17 years: 12 - 196 ng/dL
Performing Laboratory
Quest SJC
New York DOH Approval Status
Yes