Zinc, Serum (ZINCS)  

 
NPHL has moved to an electronic ordering system, NUlirt, and it is now the preferred method to order all tests. Once ordered, print a "batch list" (see NUlirt Guide).

Forms Required - Nulirt batch list or NPHL Test Request Form (completed in entirety) must accompany the specimen to include the following information: symptoms and date of onset, pregnancy status, travel and vaccine history. Testing will not be performed without all required information.

Please call NPHL Client Services at (402) 559-2440 or toll free at (800) 334-0459 for further clarification.

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Test: Zinc, Serum
  • No pre-approval needed
  • NUlirt Order: ZINCS
 
Method: ICP-MS  
Availability:
  • Thursday
  • If received by 9:00 AM, reported within 24 hours
 
Specimen: Serum  
Collection Device:
  • Royal Blue Tube (No additive) 
  • Draw blood using metal free materials, syringe, test tube, and stopper
  • Specimen Preparation: 
    • Allow blood to clot for 30-40 minutes (no longer than 60 minutes)
    • Centrifuge for 10 minutes at 2400 rpm
    • Pour serum into polyethylene tubes or metal free tubes
 
Volume:
  • Optimum: 0.5 mL
  • Minimum: 0.2 mL
 
Unacceptable: Patients that have recently had a procedure involving barium intake  
Specimen Stability:
  • Ambient air (15°-25° C) up to 28 days
  • Refrigerated (2°-8° C) up to 28 days
  • Frozen (-20° C) up to 3 months
 
Reference Interval: 60-120 µg/dL  
Comments:
  • No fasting or special diets are required
  • Presence of barium will give elevated values
  • 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)
 
Revised: 10/24/2025 
If you have questions about proper specimen collection, please call NPHL Client Services at (402) 559-2440 or toll free at (800) 334-0459.

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