Yale New Haven Hospital

Department of Laboratory Medicine
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Placental lactogen

Lab Section: 

Sendout Reference

 

Lab Location: 

Sendout

Reference Lab: 

Quest

 

Test ID: 

LAB1041

 

Synonyms: 

Human Placental Lactogen

Methodology: 

Enzyme Immunoassay (EIA)

Schedule: 

Thursday

Reported: 

10 days

Specimen Requirements: 

Collection: 3.0 mL Blood in a Red Top Tube.
Pediatric volume: 1 mL.
Red-top tube (no gel)
Transport: Frozen.
Unacceptable conditions: Received room temperature
Stability: Ambient: 4 hours; Refrigerated: 24 hours; Frozen: 30 Days

 

Notes: 

Clinical Indications: Human placental lactogen (HPL; chorionic somatomammotropin) is a 21, 000 kD polypeptide (similar in structure to growth hormone and prolactin) produced during pregnancy by placental trophoblastic cells. The level of HPL in maternal serum is directly related to placental function and fetal well-being. HPL is detected at about 6 weeks after conception and its concentration increases gradually to peak levels (without decreases) until about the 34th week where it remains stable for the remainder of the pregnancy. Consistently low levels throughout pregnancy or a sudden drop in serial determinations are an indication of fetal distress. After normal delivery the HPL concentration falls rapidly to an undetectable level. The HPL levels in serum of women with multiple placenta pregnancies generally exceeds that of single placenta pregnancies. This is generally noted from the second trimester to delivery.

Reference Interval: 

See patient report or consult reference laboratory website.

http://www.questdiagnostics.com/testcenter/TestDetail.action?tabName=OrderingInfo&ntc=504

 

CPT Code(s): 

83632

Last Changed: 

8/30/2017 2:50:28

Last Reviewed: 

8/30/2017 2:50:36