Test Details

Mnemonic

PTH

Ordering Code

1010400

CPT-4 Code(s)

83970

Specimen Information

Collect

Lavender EDTA
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Specimen Preparation

Centrifuge, separate plasma from cells and send 1.5 mL plasma frozen in a screw-capped plastic vial. Label as PLASMA.
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Alternate Specimen

Serum: 2.0 mL serum (1.0 mL minimum) frozen
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Minimum Volume

1.0 mL
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Transport Temperature

Frozen
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Rejection Criteria

Grossly hemolyzed specimens, heparinized plasma
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Stability

Plasma:
Room temperature: 48 hours
Refrigerated: 72 hours
Frozen: 6 months

Serum:
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 6 months
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Methodology

Immunoassay
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Reference Range

<1 year: 7 - 58 pg/mL
1 - 7 years: 12 - 55 pg/mL
8 - 18 years: 12 - 71 pg/mL
≤19 years: 14 - 64 pg/mL
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Performing Laboratory

Quest Valencia
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