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Test Code LAB113 Phosphorus

Additional Codes

CPT Code: 84100

Methodology

This test is also included in Renal Function Panel (LAB19).

Performing Laboratory

TidalHealth Peninsula Regional - Core Laboratory: Chemistry

Specimen Requirements

Submit only 1 of the following specimens:

 

Plasma
Draw blood in a green-top (lithium heparin) tube. Spin down and send 2 mL of lithium heparin plasma. Hemolyzed specimen is not acceptable.
Note: 1. Indicate plasma.

2. Label specimen appropriately (plasma).

 

Serum
Draw blood in a gold-top serum gel tube. Spin down and send 2 mL of serum. Hemolyzed specimen is not acceptable.
Note: 1. Indicate serum.

2. Label specimen appropriately (serum).

Reference Values

<1 month: 3.1-7.7 mg/dL

1 month-1 year: 3.1-6.8 mg/dL

2-12 years: 3.1-5.9 mg/dL

13-15 years: 3.1-5.4 mg/dL

≥16 years: 2.4-4.7 mg/dL

Critical value (automatic call-back): <1.0 mg/dL