Ordering Recommendation


Quantitative Ion-Selective Electrode/Quantitative Enzymatic Assay/Quantitative Spectrophotometry




Within 24 hours

New York DOH Approval Status

This test is New York DOH approved.

Specimen Required

Patient Preparation

Plasma separator tube, or serum separator tube SST.

Specimen Preparation

Allow serum tube to clot completely at room temperature. Separate serum or plasma from cells ASAP within 30 minutes of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.3 mL)

Storage/Transport Temperature


Unacceptable Conditions

Specimens collected in EDTA, citrate, or oxalate.


After separation from cells: Ambient: Calcium and CO2: 4 hours, All others: 24 hours; Refrigerated: 1 week; Frozen: 2 weeks

Reference Interval

By report (reports may vary based on instrumentation)

Interpretive Data

Compliance Category



This panel includes: Calcium, Serum or Plasma (0020027), Carbon Dioxide, Serum or Plasma (0020004), Chloride, Serum or Plasma (0020003), Creatinine, Serum or Plasma (0020025), Glucose, Serum or Plasma (0020024), Potassium, Plasma or Serum (0020002), Sodium, Plasma or Serum (0020001), and Urea Nitrogen, Serum or Plasma (0020023).

Hotline History


CPT Codes



Component Test Code* Component Chart Name LOINC
0020001 Sodium, Serum or Plasma 2951-2
0020002 Potassium, Serum or Plasma 2823-3
0020003 Chloride, Serum or Plasma 2075-0
0020004 Carbon Dioxide, Serum or Plasma 2028-9
0020023 Urea Nitrogen, Serum or Plasma 3094-0
0020024 Glucose, Serum or Plasma 2345-7
0020025 Creatinine, Serum or Plasma 2160-0
0020027 Calcium, Serum or Plasma 17861-6
0020396 Anion Gap 33037-3
3004293 UH EGFR
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.


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