Laboratory Information

Test Name Zinc
Synonyms Zn
External Price (excl. GST) $22.53

Specimen Collection

Specimen Collection Protocols Must be separated from cells within 2 hours of collection. Haemolysis must be avoided.
Patient Specimen 4 mL blood. K2EDTA Trace element tube (navy blue top). Trace element tubes with either heparin or no additive are also acceptable.
Paediatric Specimen A full micro EDTA tube
Minimum Volume 1mL plasma
Sample Delivery to Lab Ambient

Test Information

Department Biochemistry
Test Availability Mon -Fri, 0800-1630
Laboratory Testing Time 3 days
Method Atomic Absorption Spectroscopy
Unit Of Measurement ┬Ámol/L
Reference Interval

9.0 - 17.0 umol/L The reference interval quoted is for non-fasting, random samples. Values are slightly higher for fasting, morning samples (10.7 - 18.3 umol/L). As zinc is highly protein-bound, calculation of an adjusted zinc level is appropriate for hypoproteinaemic patients: Adjusted Plasma Zinc = plasma zinc x (77/Total protein g/L)

Uncertainty Of Measurement 10%
Additional Information

Plasma copper may be measured on the same sample.

Instructions for Referral to Waikato Lab

Aliquot Instructions If sending from an outside laboratory specimen must be sent separated. Plasma must be separated from Trace Element tube within 2 hours of collection.

Electronic Information

Registration Code ZIN
HL7Mapping Code $ZIN