UW Hospital and Clinics Lab Test Directory
| Test Name: |
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Cystine, WBC
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| Test Code(s): |
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WBCCYS / HCWBCCYS
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| CPT Code(s): |
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82131, 84155
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| Methodology: |
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Tandem Mass Spectometry
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| Testing Site: |
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Testing will be sent to an approved reference laboratory.
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| Turnaround Time: |
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Routine: 10 days.
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Specimen Requirements
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| Specimen: |
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Blood
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| Collection Instructions: |
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Intended for pediatric patients only. If questions, contact Client Services Referral office (608)262-6388.
Draw Monday- Thursday only.
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| Collection Container: |
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Preferred: Yellow top(with ACD-A/B anticoagulant)
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| Collection Volume: |
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Preferred: 9 mL
Pediatrics: 7 mL
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| Sample Analyzed: |
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White blood cells
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| Volume Required: |
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Preferred: 7 mL
Pediatrics: 5 mL
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| Unacceptable Criteria: |
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Do not heat or freeze.
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| Stability: |
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Ambient: Acceptable
Refrigerated: Not acceptable
Frozen: Not acceptable
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Interpretation
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Reference Interval:
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| Normal Range: |
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| White Blood Cells: |
<0.2 nmoles 1/2 cys/mg protein |
| Cystinosis: |
4.0-13.2 nmol 1/2 cys/mg protein |
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cystinosis
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