Phosphorus

Tube Type = Mint Green Top

Tube Type

Test ID LAB113
EPIC Order PHOSPHORUS
CPT Code(s) 84100
Group/Individual Test Individual
Laboratory Core Laboratory
Tube Station Routine 30; STAT 888
Specimen Routine: 1 mL blood/green lithium heparin gel tube. Also acceptable gold SST or red plain tube
Micro: 200 µL blood/mint green top bullet/gold top/red top
Stability Unspun: 6 hrs
Spun/Separated,
Room Temp:		 8 hours
Spun/Separated,
Refrigerated:		 2 days
Spun/Separated,
Frozen:		 30 days
Availability 24 hrs/day
Turnaround Time STAT 1 hr., Routine 2 hrs.
Reference Range Normal:
Serum Phosphorus (mg/dL)
Age Ranges (mg/dL)
0 - 1 year 4.3-7.3
1 - 5 years 4.9-6.5
5 - 13 years 4.6-6.2
13 - 16 years 3.3-5.8
16 - 18 years 2.9-5.1
>18 years 2.4-5.1
Critical: <1.0 mg/dL 
Comments Reference ranges effective 9/21/2022

Reviewed by J. Carr on January 02, 2026

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514