ARUP's Laboratory Test Directory

Lead, Blood (Venous) : 0020098

Mnemonic: LEAD-WB

Methodology: Inductively Coupled Plasma/Mass Spectrometry
Performed: Sun-Sat
Reported: 1-2 days
Specimen Required: Collect:  One 7 mL royal blue (K2EDTA) or (Na2EDTA).

Transport:  7 mL whole blood (royal blue, K2EDTA or Na2EDTA) or 3 mL whole blood (tan K2EDTA) at 20-25°C. (Min: 1 mL)

Pediatric Collection/Transport:  0.5 mL whole blood (royal blue, K2EDTA or Na2EDTA, or tan K2EDTA) at 20-25°C.

Remarks:  This test is for venous collection only. For specimens obtained using skin puncture (capillary) technique refer to: Lead, Blood Capillary (0020745).

Unacceptable Conditions:  Heparin anticoagulant.

Stability:  If the sample is drawn and stored in the appropriate container, the trace element values do not change with time.
Reference Interval:
By report
Interpretive Data: Blood lead in children: Refer to CDC Screening Young Children for Lead Poisoning Program, 1997.  Blood lead in adults, occupationally exposed: Refer to OSHA and/or industrial standards.
 
Blood Lead in Adults*
Lead* Comment
0.0-9.9 µg/dL No additional action unless exposure sources change.
10.0-24.9 µg/dL Identify and minimize exposure.
25.0-49.9 µg/dL Remove from exposure if symptomatic.
50.0-79.9 µg/dL Remove from lead exposure.  Immediate medical evaluation.  Excessive chelation therapy is discouraged.
³ 80.0 µg/dL Chelation may be indicated if symptomatic.  Seek consultation.
* Blood lead in adults, occupationally exposed: Refer to OSHA and/or industrial standards.

 
Blood Lead in Children according to CDC Screening Young Children for Lead Poisoning Program, 1997*
Lead* Comment
0.0-9.9 µg/dL No additional action unless exposure sources change.
10.0-14.9 µg/dL Provide family lead education.  Provide at least one follow-up test within three months.  Refer for social services, if necessary.
15.0-19.9 µg/dL Provide family lead education.  Provide one follow-up test within two months.  Refer for social services, if necessary.  If blood levels (BLLs) persist (i.e., two venous BLLs in this range at least three months apart) or increase, proceed according to actions for BLLs 20-44.
20.0-44.9 µg/dL Provide coordination of care (case management).  Provide clinical management.  Provide environmental investigation.  Provide lead-hazard control.
45.0-69.9 µg/dL Within 48 hours, begin coordination of care (case management), clinical management, environmental investigation, and lead-hazard control.
³ 70 µg/dL This is a critical concentration.  A second venous test, hospitalization, appropriate chelation therapy, and removal from lead exposure are urgently recommended.
Elevated results from noncertified lead-free tubes may be due to contamination.  Elevated levels of blood lead should be confirmed with a second specimen collected in a metal-free tube (royal blue, Na2EDTA or tan K2EDTA).

CPT Code(s): 83655
 
 

 

 

 
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