Pathology tests database

Sample and container requirements

Serum Lithium Heparin Plasma (paediatrics only)

Minimum volume required

Special requirements

None

Patient preparation

None

Sample viability

Turnaround time

This assay is run throughout the day and night. The in-lab turnaround time is normally less than 24 hours.

Reference range

Neonate (<4 weeks): 0.6 – 1.0 mmol/L 4 weeks – 16 years: 0.7 – 1.0 mmol/L Adult: 0.7 – 1.0 mmol/L (Source: Pathology Harmony Recommendations)

Clinical guidance

Magnesium is an intracellular cation. It is essential for enzyme activity, for the synthesis of nucleic acids and proteins, and has an important physiological role in the neuromuscular and cardiovascular systems. Please refer to LabTestsOnlineUK to learn more about magnesium. https://labtestsonline.org.uk/tests/magnesium

Notes