Lead, Blood (Pediatric), Venous

CPT: 83655
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Test Details

Synonyms

  • Pb, Blood

Use

Monitor environmental lead exposure in children younger than 16 years.

Limitations

This test was developed, and its performance characteristics determined, by LabCorp. It has not been cleared or approved by the US Food and Drug Administration (FDA).

Methodology

Atomic absorption spectrometry (AAS) or inductively coupled plasma/mass spectrometry (ICP/MS)

Reference Interval

Environmental exposure: 0 to 15 years: 0−4 μg/dL1

Additional Information

The Centers for Disease Control and Prevention recommends the following testing schedule for children with elevated BLLs (blood lead levels) on a screening test.2 See table.

Blood Lead Levels (CDC)

Blood

(μg/dL):

Time to Confirmation Testing:

*The higher the BLL on the screening test, the more urgent the need for confirmation testing.

Reference value-9

1 to 3 m

10−45

1 wk to 1 m*

45−59

48 h

60−69

24 h

≥70

Urgently as emergency test

Specimen Requirements

Specimen

Whole blood

Volume

3 mL (venous)

Minimum Volume

0.5 mL (venous)

Container

Royal blue-top (EDTA) tube or tan-top lead-free tube; submit original tube.

Collection

Mix blood thoroughly to avoid clotting.

Storage Instructions

Maintain specimen at room temperature.

Stability Requirements

Temperature

Period

Room temperature

14 days

Refrigerated

14 days

Frozen

14 days

Freeze/thaw cycles

Stable x2

Causes for Rejection

Capillary specimen in Microtainer tubes; clotted specimen

Clinical Information

Footnotes

1. Centers for Disease Control and Prevention. Preventing Lead Poisoning in Young Children: A Statement by the Centers for Disease Control. Atlanta, Ga: CDC;1991.
2. Low Level Lead Exposure Harms Children: A Renewed Call for Primary Prevention. Report of the Advisory Committee on Childhood Lead Poisoning Prevention of the Centers for Disease Control and Prevention. January 4, 2012.

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
717009 Lead, Blood (Pediatric) 5671-3 007030 Lead, Blood (Peds) Venous ug/dL 5671-3

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