Test Code TPN3 TOTAL PARENTERAL NUTRITION (TPN) PANEL, PLASMA

Important Note

Effective 6/24/2025, all eGFR calculations will move from MDRD to CKD-EPI 2021 and will display which gender constants were used as part of the result calculation.

For more information, please revew this presentation.

Additional Codes

Software	Test Code
Label Text	TPN3
EPIC	LAB10489

Performing Laboratory

NorDx Laboratories

Useful For

Monitoring patients who are being administered total parenteral nutrition (TPN)

Method Name

Spectrophotometry (SP)

Reference Values

See individual analytes

Pre 6/24/2025 eGFR information

Post 6/24/2025 eGFR information

Days and Times Test Performed

Monday through Sunday

Report Available

1 Day

Available Stat

Specimen Type

Plasma

Preferred Container

Plasma Separator Tube (PST)

Preferred Volume

Plasma: 1 mL (Plasma Separator Tube (PST))

Minimum Volume

Plasma: 0.5 mL (Plasma Separator Tube (PST))

Specimen Collection and Handling

Spin specimen, separate from clot within 2 hours of draw and send refrigerated.

Add On Capable

Yes

Advance Beneficiary Notice Requirements

Yes, for Lipids (Triglycerides) only

CPT Code Information

CPT Code	CPT Description	CPT Disclaimer
80048	Basic Metabolic Panel; Includes Calcium, Total
82040	Albumin, Serum, Plasma, or Whole Blood
83735	Magnesium, Quantitative
84100	Phosphorus Inorganic (Phosphate), Quantitative
84478	Triglycerides, Quantitative

Performing Laboratory Location