Laboratory Medicine

Test catalogue

Calcium
Test Name Calcium
Specimen Type / Requirements Container Type = Gold (SST) or Lt Green (PST) Minimum Testing Volume = 0.5mL Serum or Plasma Preferred Testing Volume = 1mL Serum or Plasma Tube must fill to at least ½ or greater of its vacuum capacity
Specimen Handling Collection Instructions: Serum or heparinized plasma collected with or without gel separator. Write your initials, date and time of collection on the collection label or requisition. Laboratory Staff Instructions Serum or heparinized plasma free from hemolysis collected with or without gel separator. Separate serum or plasma from cells within 2 hours of collection Rejection Criteria: Gross hemolysis, Unlabeled or Not Sufficient Quantity Samples will be rejected. Stability: Calcium is stable in serum or plasma at room temperature for 4 h, refrigerated for 3 weeks and for 8 months at -15 to -20°C. Transportation: Send sample to core lab as soon as possible.

Calcium

Test Name

Calcium

Specimen Type / Requirements

Container Type = Gold (SST) or Lt Green (PST)

Minimum Testing Volume = 0.5mL Serum or Plasma

Preferred Testing Volume = 1mL Serum or Plasma

Tube must fill to at least ½ or greater of its vacuum capacity

Specimen Handling

Collection Instructions: Serum or heparinized plasma collected with or without gel separator. Write your initials, date and time of collection on the collection label or requisition.

Laboratory Staff Instructions Serum or heparinized plasma free from hemolysis collected with or without gel separator. Separate serum or plasma from cells within 2 hours of collection

Rejection Criteria: Gross hemolysis, Unlabeled or Not Sufficient Quantity Samples will be rejected.

Stability: Calcium is stable in serum or plasma at room temperature for 4 h, refrigerated for 3 weeks and for 8 months at -15 to -20°C.

Transportation: Send sample to core lab as soon as possible.

Reference Value

Age	Normal Range	Abnormality - Critical	Units
0 up to 1 Years	2.17 - 2.74	< 1.40 or >3.00	mmol/L
1 Years up to 19 Years	2.32 - 2.64	< 1.40 or >3.00	mmol/L
19 Years up to Unspecified	2.15 - 2.55	< 1.40 or >3.00	mmol/L

Test Code

LAB53

Methodology

Potentiometric Assay

Testing Location

SMH-Biochemistry

Other Information

Last Updated: Aug 18, 2026