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For hours, walk-ins and appointments.Synonyms
- Pb, Blood
Special Instructions
Use for capillary draws (fingerstick) only. If tan-top lead free tube or royal blue-top (EDTA) tube is collected, use test Lead, Blood (Pediatric) [717009].
Expected Turnaround Time
1 - 4 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Related Information
Related Documents
Specimen Requirements
Specimen
Whole blood
Volume
0.5 mL (capillary)
Minimum Volume
0.5 mL (capillary)
Container
Lavender-top (Microtainer) 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 |
Patient Preparation
For capillary puncture, wash skin surface thoroughly to minimize contamination.
Causes for Rejection
Venous collections tan-top lead free tube or royal blue-top (EDTA) tube; clotted specimen
Test Details
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 Food and Drug Administration.
Methodology
Atomic absorption spectrometry (AAS) or inductively coupled plasma/mass spectrometry (ICP/MS)
Reference Interval
Environmental exposure: 0 to 15 years: 0.0−3.4 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 (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 w to 1 m* |
45−59 | 48 h |
60−69 | 24 h |
≥70 | Urgently as emergency test |
Footnotes
1. Centers for Disease Control and Prevention. Preventing Lead Poisoning in Young Children: A Statement by the Centers for Disease Control. Atlanta, Ga: Centers for Disease Control and Prevention; 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 |
|---|---|---|---|---|---|---|
| 717016 | Lead, Blood (Peds) Capillary | 10368-9 | 007029 | Lead, Blood (Peds) Capillary | ug/dL | 10368-9 |
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