May be useful as an indicator of acute deficiency. For acute toxicity, Zinc, Urine (0020462) may be a more reliable indicator of exposure.
- Patient Preparation
- Diet, medication, and nutritional supplements may introduce interfering substances. Upon the advice of their physician, patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, and nonessential over-the-counter medications for one week prior to sample draw.
- Royal Blue (No Additives), Royal Blue(K2 EDTA), or Royal Blue (Na2 EDTA).
- Specimen Preparation
- Separate from cells ASAP or within 2 hours of collection Transfer 2 mL serum or plasma to an ARUP Trace Element-Free Transport Tube (ARUP supply #43116) available online through eSupply using ARUP Connect or contact ARUP Client Services at (800) 522-2787. (Min: 0.5 mL)
- Storage/Transport Temperature
- Room temperature. Also acceptable: Refrigerated or frozen.
- Unacceptable Conditions
- Specimens collected in containers other than specified. Specimens transported in containers other than specified. Hemolyzed specimens.
- Ambient: Indefinitely; Refrigerated: Indefinitely; Frozen: Indefinitely
Circulating zinc concentrations are dependent on albumin status and are depressed with malnutrition. Zinc may also be lowered with infection, inflammation, stress, oral contraceptives, and pregnancy. Zinc may be elevated with zinc supplementation or fasting. Elevated zinc concentrations may interfere with copper absorption.
|Component Test Code*||Component Chart Name||LOINC|
- serum zinc level