Cadmium Exposure Panel, OSHA




Test Mnemonic

CADEXR

CPT Codes

  • 82232 - QTY (1)
  • 82300 - QTY (2)

Performing Laboratory

ARUP


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
40 mLUrine, randomClean container See notePatient Prep: Refer to Special Information. Collect urine using spot technique (single void) in an open-top urine collection cup. Container must be trace metal free. Pour off three aliquots from random specimen. For B-2-Microglobulin pour off 3 mL urine, adjust pH to 6 - 8 using 1 M HCl or 5% NaOH, label for B-2-Microglobulin testing, and freeze ASAP. Refrigerate other two aliquots; label one 7 mL aliquot for Cadmium (using trace element-free tube, ARUP supply #43116) and one 2 mL aliquot for Creatinine testing.
7 mLWhole bloodEDTA (Royal blue) RefrigeratedHEAVY METALS FORM REQUIRED to meet State Health Department requirements. MULTIPLE SPECIMEN TYPES ARE REQUIRED FOR THIS TEST. (Both urine and blood should be collected on the same day). Send blood in original tube.

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
0.5 mL    Whole blood
2 mL    Total urine minimum: 2 mL. Note: 1 mL required for urine B-2 microglobulin, 0.5 mL for urine cadmium, 0.5 mL for urine creatinine

Stability

Environmental Condition Description
AmbientBlood: Indefinitely; Urine for Beta-2-Microglobulin: 8 hours; Urine for Cadmium: 1 week; Urine for Creatinine: 2 days
FrozenBlood: Unacceptable; Urine for Beta-2-Microglobulin: 2 months; Urine for Cadmium: 1 year; Urine for Creatinine: 6 months
RefrigeratedBlood: Indefinitely; Urine for Beta-2-Microglobulin: 48 hours; Urine for Cadmium: 2 weeks; Urine for Creatinine: 1 month

Days Performed

Mon - Fri

Turnaround Time

2 - 6 days

Methodology

Name Description
Chemiluminescence Immunoassay (CLIA) 
Inductively Coupled Plasma / Mass Spectrometry (ICP-MS) 
Spectrophotometry (S) 

Reference Range

Beta-2-Microglobulin, Ur ug/L
Sex Age From Age To Type Range Range Unit
   Years99 YearsNormal0 - 300ug/L
Beta-2-MicroglobulinRatio to CRT
Sex Age From Age To Type Range Range Unit
   Years99 YearsNormal0 - 300ug/g crt
Cadmium Ur Ratio to CRT
Sex Age From Age To Type Range Range Unit
   Years99 YearsNormal0.0 - 3.2ug/g crt
Cadmium Urine per Volume (ug/L)
Sex Age From Age To Type Range Range Unit
   Years99 YearsNormal0.0 - 1.0ug/L
Cadmium, Blood
Sex Age From Age To Type Range Range Unit
   Years99 YearsNormal0.0 - 5.0ug/L

Special Info

Patient demographics (Heavy Metals) form is required to meet State Health Department requirements. Both blood and urine must be submitted for testing. Patient Preparation: To avoid contamination, please collect specimens at the beginning of work shift. Urine: Diet, medication, and nutritional supplements may introduce interfering substances. Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, and non-essential over-the-counter medications upon the advice of their physician. High concentrations of iodine may interfere with elemental testing. Collection of urine specimens from patients receiving iodinated or gadolinium-based contrast media should be avoided for a minimum of 72 hours post-exposure. Collection from patients with impaired kidney function should be avoided for a minimum of 14 days post contrast media exposure. Blood and urine should be collected the same day. Blood: Specimens collected in tubes other than royal blue (EDTA), or specimens transported in containers other than royal blue (EDTA) tubes or trace element-free transport tubes will be rejected. Heparin anticoagulant and clotted specimens are unacceptable. Urine: Specimens collected within 72 hours after administration of iodinated or gadolinium-based contrast media are unacceptable. Specimens transported in non-trace element-free transport tubes (with the exception of the original device) are unacceptable. Specimens containing blood or fecal materials will be rejected. This test is New York DOH approved.

Clinical Info

Interpretations: Blood cadmium levels can be used to monitor acute toxicity and in combination with cadmium urine and B-2 microglobulin is the preferred method for monitoring occupational exposure. Symptoms associated with cadmium toxicity vary based upon route of exposure and may include tubular proteinuria, fever, headache, dyspnea, chest pain, conjunctivitis, rhinitis, sore throat and cough. Ingestion of cadmium in high concentration may cause vomiting, diarrhea, salivation, cramps, and abdominal pain. Urine cadmium levels can be used to assess cadmium body burden. In chronic exposures, the kidneys are the primary target organ. Symptoms associated with cadmium toxicity vary based upon route of exposure and may include tubular proteinuria, fever, headache, dyspnea, chest pain, conjunctivitis, rhinitis , sore throat and cough. Ingestion of cadmium in high concentration may cause vomiting, diarrhea, salivation, cramps and abdominal pain. Urine B2-Microglobulin is an early marker of irreversible kidney damage and disease. Urine creatinine values less than 20 mg/dL represent very dilute urine and collections should be repeated. OSHA Action Levels: Cadmium, Urine (ug/g crt) : level A: 0-3 ; level B: 3.1-7.0; level C: 7.1 or greater; Cadmium, Blood (ug/L): level A : 0-5; level B: 5.1-10.0; level C: 10.1 or greater; B-2-Microglobulin, Urine (ug/g crt) : level A: 0-300; level B: 301-750; level C: 751 or greater; MONITOR: level A: Annual ; level B: Semiannual ; level C: Quarterly; MEDICAL EXAM: level A: Biennial; level B: Annual; level C: Semiannual; Reassess cadmium exposure in less than two weeks: level A: not applicable; level B: Discretionary removal; level C: Mandatory removal *If an employee's B-2 Microglobulin level is above 750 ug/g CRT, in order for mandatory medical removal to be required, either the employee's CdU level must also be >3 ug/g CRT or CdB level must also be >5 ug/L. *The determination of discretionary or mandatory removal is made by the examining physician consistent with the medical surveillance specifications in the Federal Register 42456 to 42463.

Patient Info Sheet