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23034 Zinc

Zinc
Test Code: ZINC
Synonyms/Keywords
Zinc in serum, Zinc in plasma, Zinc in blood, Zn​
Useful For
This test is useful for monitoring zinc level in serum or plasma to determine deficiency or toxicity states.​
Specimen Requirements
Fasting RequiredSpecimen TypePreferred Container/TubeAcceptable Container/TubeSpecimen VolumeSpecimen Minimum Volume
(allows for 1 repeat)		Pediatric Minimum Volume
(no repeat)
No​Serum​

Royal Blue Top Tube (RBTT) (this is a metal free container with no additive)​

2.0 mL serum​1.1 mL​1.0 mL​
​No​PlasmaRoyal Blue Top K2 EDTA tube (alternate specimen type)​​2.0 mL plasma​1.1 mL​1.0 mL
Collection Processing Instructions
Sample collection instructions:
1.      Centrifuge the sample
2.      Within 2 hours of collection: Pour off, or aliquot using plastic pipet, serum into "Serum 
       Transfer Tube" or alternate metal-free aliquot tube (example: "Mayo Metal-Free Plastic Aliquot 
       Vial") (do not use glass pipettes, etc.)
 
Important Notes / Information: Serum or plasma should be removed from the cells within 2 hours of collection. Do not use glass pipettes or aliquot tubes, rubber stoppers, wood applicator sticks (for rimming clots), etc. as these may contaminate the specimen! If absolute necessary to rim for clots, only use a plastic pipet to minimize potential sample contamination.  All collection and transfer tubes can be requested/ordered from Marshfield Labs.
Marshfield Labs serum transfer tubes have been validated to be metal-free and can be used for this test.
Specimen Stability Information
Specimen Type Temperature Time
​Plasma ​​Refrigerate​1 week
​Frozen​1 month
Serum​ Refrigerate​ 1 week​
Frozen 1 month​
Rejection Criteria
Gel or serum separator tubes
​Plasma separator tubes
Hemolyzed samples​
Specimens collected in tube not specified​
Interference
Hemolysis, heparin, wood applicator sticks (in rimming clots), glass transfer pipettes, capillary tubes, rubber collection tube stoppers and glass aliquot tubes may contaminate the specimen.​
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday, Wednesday, Friday​ 6-8 hours​ Atomic Absorption/Perkin-Elmer 3100 Atomic Absorption Analyzer​
Test Information
This test was developed and its performance characteristics determined by Marshfield Labs.  It has not been cleared or approved by the US Food and Drug Administration.  This test is used for clinical purposes.  It should not be regarded as investigational or for research.
Reference Range Information
Performing Location Reference Range
Marshfield​

Serum: 65-115 ug/dL

Note: Plasma levels may be 5-10 ug/dL lower than serum levels​

Interpretation
Decreased zinc levels result in decreased  taste acuity and are frequently associated with malnutrition, chronic alcoholism, leukemia, Hodgkin's disease, and diseases where gut absorption is inhibited (diarhhea, steatorrhea, celiac disease).​
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
84630​ ​ ​ ​ ​
Classification
This test was developed and its performance characteristics determined by Marshfield Labs.  It has not been cleared or approved by the US Food and Drug Administration.  This test is used for clinical purposes.  It should not be regarded as investigational or for research.
Synonyms/Keywords
Zinc in serum, Zinc in plasma, Zinc in blood, Zn​
Ordering Applications
Ordering Application Description
​Centricity ​Zinc
​Cerner ​Zinc, Blood
​COM ​Zinc, Serum
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting RequiredSpecimen TypePreferred Container/TubeAcceptable Container/TubeSpecimen VolumeSpecimen Minimum Volume
(allows for 1 repeat)		Pediatric Minimum Volume
(no repeat)
No​Serum​

Royal Blue Top Tube (RBTT) (this is a metal free container with no additive)​

2.0 mL serum​1.1 mL​1.0 mL​
​No​PlasmaRoyal Blue Top K2 EDTA tube (alternate specimen type)​​2.0 mL plasma​1.1 mL​1.0 mL
Collection Processing
Sample collection instructions:
1.      Centrifuge the sample
2.      Within 2 hours of collection: Pour off, or aliquot using plastic pipet, serum into "Serum 
       Transfer Tube" or alternate metal-free aliquot tube (example: "Mayo Metal-Free Plastic Aliquot 
       Vial") (do not use glass pipettes, etc.)
 
Important Notes / Information: Serum or plasma should be removed from the cells within 2 hours of collection. Do not use glass pipettes or aliquot tubes, rubber stoppers, wood applicator sticks (for rimming clots), etc. as these may contaminate the specimen! If absolute necessary to rim for clots, only use a plastic pipet to minimize potential sample contamination.  All collection and transfer tubes can be requested/ordered from Marshfield Labs.
Marshfield Labs serum transfer tubes have been validated to be metal-free and can be used for this test.
Specimen Stability Information
Specimen Type Temperature Time
​Plasma ​​Refrigerate​1 week
​Frozen​1 month
Serum​ Refrigerate​ 1 week​
Frozen 1 month​
Rejection Criteria
Gel or serum separator tubes
​Plasma separator tubes
Hemolyzed samples​
Specimens collected in tube not specified​
Interference
Hemolysis, heparin, wood applicator sticks (in rimming clots), glass transfer pipettes, capillary tubes, rubber collection tube stoppers and glass aliquot tubes may contaminate the specimen.​
Useful For
This test is useful for monitoring zinc level in serum or plasma to determine deficiency or toxicity states.​
Reference Range Information
Performing Location Reference Range
Marshfield​

Serum: 65-115 ug/dL

Note: Plasma levels may be 5-10 ug/dL lower than serum levels​

Interpretation
Decreased zinc levels result in decreased  taste acuity and are frequently associated with malnutrition, chronic alcoholism, leukemia, Hodgkin's disease, and diseases where gut absorption is inhibited (diarhhea, steatorrhea, celiac disease).​
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday, Wednesday, Friday​ 6-8 hours​ Atomic Absorption/Perkin-Elmer 3100 Atomic Absorption Analyzer​
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
84630​ ​ ​ ​ ​
Classification
This test was developed and its performance characteristics determined by Marshfield Labs.  It has not been cleared or approved by the US Food and Drug Administration.  This test is used for clinical purposes.  It should not be regarded as investigational or for research.
For most current information refer to the Marshfield Laboratory online reference manual.