Sign in →

Test Code LAB5906 Rapid Lead Screen Blood

NOTICE

THIS TEST IS A RAPID SCREEN FOR LEAD IN CAPILLARY BLOOD. FOR DEFINITIVE LEAD TESTING IN VENOUS WHOLE BLOOD BY ICP-MS, PLEASE REFER TO "LEAD, WHOLE BLOOD"

Performing Laboratory

St. Louis Children's Hospital - POC

Specimen Requirements

Patient Preparation: None

Container/Tube  
Preferred/Acceptable: Lavender-top (EDTA) samplette/microtainer
Collection Volume: 0.5 mL (minimum 0.25 mL - microtainer MUST be hafl-full/up to '250' line)

Submission Container/Tube: If specimen is coming from outside facility, send whole blood in original collection container.

Special Instructions: Immediately invert tube gently 8-10 times after collection to ensure proper mixing of blood and anticoagulant (this will avoid specimen clotting). Do not overfill tube. Send to lab promptly. 

Sample Rejection

Mislabeled or unlabeled specimens

Clotted specimens

Specimens collected by method other than cappillary collection

Logistics

Test Availability: Monday-Sunday
Cut-off time: None; performed as received
Turnaround Time: Same day; 2 hours from receipt in performing lab

Reference Values

Reference Interval: 

All ages <3.3 mcg/dL                                              

Critical Value: 

All ages >45.0 mcg/dL                                            

Critical results will be called back automatically initially and every 24 hours thereafter.

Methodology

Electrochemistry

Limitations

  • NA

Additional Information

FOR SLCH CORE LABORATORY USE ONLY

Lab Processing Instructions: DO NOT SPIN. Place whole blood microtainer in labeled rack on core lab counter
Processed Volume: minimum 0.25 mL EDTA whole blood
Analyte Stability:

Specimen Type Temperature Time
Whole Blood (unprocessed)  Ambient 24 hours
  Refrigerated     do not refrigerate
  Frozen  unacceptable       

Test Classification and CPT Code

83655

LOINC

77307-7

Last Reviewed

07/2025