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

Methodology

LC-Mass Spectrometry/Mass Spectrometry
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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
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Performing Laboratory

Quest SJC
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