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Test Code PBCU Lead/Creatinine Ratio, Urine


Specimen Required


Only orderable as part of profile. For more information see:

-PBUCR / Lead/Creatinine Ratio, Random, Urine

-HMUCR / Heavy Metal/Creatinine Ratio, with Reflex, Random, Urine


Method Name

Only orderable as part of profile. For more information see:

-PBUCR / Lead/Creatinine Ratio, Random, Urine

-HMUCR / Heavy Metal/Creatinine Ratio, with Reflex, Random, Urine

 

Triple-Quadrupole Inductively Coupled Plasma Mass Spectrometry (ICP-MS/MS)

Specimen Type

Urine

Specimen Minimum Volume

1.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Urine Refrigerated (preferred) 28 days
  Ambient  28 days
  Frozen  28 days

Reject Due To

  All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Clinical Information

Increased urine lead concentration per gram of creatinine indicates significant lead exposure. Measurement of urine lead concentration per gram of creatinine before and after chelation therapy have been used as an indicator of significant lead exposure. An increase in lead concentration per gram of creatinine in the post-chelation specimen of up to 6 times the concentration in the pre-chelation specimen is normal.

 

Blood lead is the best clinical correlation of toxicity.

 

For more information see PBDV / Lead, Venous, with Demographics, Blood.

Reference Values

Only orderable as part of profile. For more information see:

-PBUCR / Lead/Creatinine Ratio, Random, Urine

-HMUCR / Heavy Metal/Creatinine Ratio, with Reflex, Random, Urine

 

0-17 years: Not established

≥18 years: <2 mcg/g creatinine

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Day(s) Performed

Monday through Friday

Report Available

2 to 4 days

CPT Code Information

83655