Human Placental Lactogen

ARUP #99721, EPIC: LAB6060, SOFT: XHPL

Specimen Collection Criteria

Collect: One plain Red-top tube.
Also acceptable: One Gold-top SST tube.

Physician Office/Drawsite Specimen Preparation

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells within two hours of collection. Transfer serum to a plastic transport tube and freeze (-20°C/-4°F or below) immediately.

Preparation for Courier Transport

Transport: 1.0 mL serum, frozen (-20°C/-4°F or below). (Min: 0.5 mL)

Rejection Criteria

Specimens not collected and processed as indicated.


Results available in 4-12 days.

Reference Range

By report.

Test Methodology

Enzyme-Linked Immunosorbent Assay.


By report.

Clinical Utility

The human placental lactogen assay is used as an index of fetal well-being. Decreased hPL levels are seen with intrauterine growth retardation. This assay is useful in the evaluation of antepartum placental function. Maternal hPL serum levels correlate with placental weight.

CPT Code


Test Codes

ARUP #99721, EPIC: LAB6060, SOFT: XHPL

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