Chromium

Test ID: 

703608

CPT code:

82495; 82570

Synonyms:

Chromium, Urine

Cr, Urine

Clinical Use:

Monitor industrial exposure to chromium

Test Information:

Chromium exposure through the inhalation of insoluble chromium compounds may produce pneumoconiosis with impairment of pulmonary function. Exposure to the inorganic soluble salts can precipitate skin ulcerations, dermatitis, perforation of the nasal septum, and respiratory sensitization. Acute exposure to these salts may result in local tissue necrosis and severe kidney damage.
Chromium and its inorganic salts are widely employed in industry, including metal plating, steel and nonferrous alloys, refractory materials, and chromate pigments and preservatives. In organic forms, chromium is also an essential nutrient for man supplied in the diet (5−115 μg/day); however, overexposure is generally associated with the industrial environment, specifically through the inhalation of chromium dust and fumes.
BEI® are reference values intended as guidelines for evaluation of occupational exposure. BEI® represent biological levels of chemicals that correspond to workers with inhalation exposure equivalent to the threshold limit value (TLV®) of the chemicals. TLVs refer to the airborne concentrations of substances and represent conditions under which it is believed that nearly all workers may be repeatedly exposed, day after day, without adverse health effects.

Specimen Type:

Urine (random)

Requested Volume: 

5 mL

Minimum Volume: 

0.6 mL

Container Type: 

Plastic urine container, no preservative

Collection:

Sampling time is during shift or at the end of shift at the end of the work week for industrial exposure monitoring. For metals with multiphase elimination, the timing is given in relation to the work day exposure (shift) as well as to the work week exposure.

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 x3

 

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