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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Protein, Total

Test Code(s): TSP / TP

CPT Code(s): 84155

Test Description: Included In: Comprehensive Metabolic Panel, Serum protein electrophoresis

Methodology: Biuret

Days Performed: Daily, 24 hours.

Turnaround Time: Stat: 1 hour.
Routine: 4 hours.

Specimen Requirements

Specimen: Blood

Collection Container: Preferred: Red cap with yellow ring (SST)
Also Acceptable: Red top

Collection Volume: Preferred: 1 mL
Pediatrics: 0.4 mL

Sample Analyzed: Serum

Volume Required: Preferred: 0.5 mL
Pediatrics: 0.2 mL

Specimen Processing: Centrifuge.  If a complete barrier has not formed, transfer cell-free serum to plastic vial.  Refrigerate.

Specimen Transport: Transport specimen to the laboratory. Transport with coolant pack if coming from outreach location.

Stability: Ambient: 24 hours
Refrigerated: 7 days
Frozen: 10 days


Reference Interval:
 Age  g/dL
 0-35 months  4.5-7.5
 36 months and up  6.0-8.0


total serum protein

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