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HelpTest 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
Females:
0-1 month: 4.3-7.7 mg/dL
1 month-1 year: 3.7-6.5 mg/dL
1-4 years: 3.4-6.0 mg/dL
4-7 years: 3.2-5.5 mg/dL
7-10 years: 3.1-5.5 mg/dL
10-13 years: 3.3-5.3 mg/dL
13-16 years: 2.8-4.8 mg/dL
16-18 years: 2.5-4.8 mg/dL
>18 years: 2.5-4.5 mg/dL
Male:
0-1 month: 3.9-6.9 mg/dL
1 month-1 year: 3.5-6.6 mg/dL
1-4 years: 3.1-6.0 mg/dL
4-7 years: 3.3-5.6 mg/dL
7-10 years: 3.0-5.4 mg/dL
10-13 years: 3.2-5.7 mg/dL
13-16 years: 2.9-5.1 mg/dL
16-18 years: 2.7-4.9 mg/dL
>18 years: 2.5-4.5 mg/dL
Critical value (automatic call-back): <1.0 mg/dL