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PROTEIN, TOTAL
MessageChemistry
Test Code
LAB118
Alias/See Also
TP, Total Protein
CPT Codes
84155
Preferred Specimen
Light green top tube (lithium heparin plasma)
Minimum Volume
Whole blood: 600 uL (one full light-green-top microtainer or two full red-top microtainers).
Serum/plasma: 300 uL.
Serum/plasma: 300 uL.
Other Acceptable Specimens
Gold top (serum separator tube) or Red Top
Instructions
LAB: Serum acceptable.
Separate specimen within 4 hours of collection.
Separate specimen within 4 hours of collection.
Specimen Stability
Ambient: ≤ 4 hrs
Refrigerated: ≤ 3days
Frozen: 6 months
Refrigerated: ≤ 3days
Frozen: 6 months
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolyzed, contaminated, not enough volume
Setup Schedule
Everyday
Report Available
Same day
Limitations
Results from plasma samples may be up to 10% higher than those from serum.
Reference Range
6.3 - 8.2 gm/dl
