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Creatinine, Plasma, Serum, or Urine
MessageAlso performed at North Mississippi Medical Center Women's
Hospital Laboratory
Test Code
CRE2
Alias/See Also
Plasma Creatinine
Serum Creatinine
Urine Creatinine
Serum Creatinine
Urine Creatinine
Preferred Specimen
Submit one of the following for creatinine testing on
urine, serum, or plasma.
Note: For urine creatinine clearance testing, a plasma
or serum tube must also be sent along with the urine
specimen.
Plasma
Draw blood in a green-top (lithium heparin) tube. Spin specimen
down and send 1 mL of plasma.
Note: 1. Indicate plasma.
2. Label specimen appropriately (plasma).
Serum
Draw blood in a plain, red-top tube. Spin specimen down and send
1 mL of serum.
Note: 1. Indicate serum.
2. Label specimen appropriately (serum).
Urine
1 mL from a 12-hour, 24-hour, random urine
collection, or 24 hour urine creatinine clearance collection.
No preservative. Follow instructions in Urine
Collections in Special Instructions.
Note: 1. Starting
and ending times of collection are required.
2. Indicate urine.
3. Label specimen appropriately (urine).
4. For Urine Creatinine Clearance collections, a
serum or plasma specimen should also be collected for creatinine
testing.
urine, serum, or plasma.
Note: For urine creatinine clearance testing, a plasma
or serum tube must also be sent along with the urine
specimen.
Plasma
Draw blood in a green-top (lithium heparin) tube. Spin specimen
down and send 1 mL of plasma.
Note: 1. Indicate plasma.
2. Label specimen appropriately (plasma).
Serum
Draw blood in a plain, red-top tube. Spin specimen down and send
1 mL of serum.
Note: 1. Indicate serum.
2. Label specimen appropriately (serum).
Urine
1 mL from a 12-hour, 24-hour, random urine
collection, or 24 hour urine creatinine clearance collection.
No preservative. Follow instructions in Urine
Collections in Special Instructions.
Note: 1. Starting
and ending times of collection are required.
2. Indicate urine.
3. Label specimen appropriately (urine).
4. For Urine Creatinine Clearance collections, a
serum or plasma specimen should also be collected for creatinine
testing.
Instructions
Transport Temperature
Refrigerate
Methodology
Rate Colorimetric
Setup Schedule
Monday through Sunday
Reference Range
PLASMA OR SERUM
Males: 0.7-1.3 mg/dL
Females: 0.6-1.0 mg/dL
URINE
0.8-2.8 g/24 hour
CREATININE CLEARANCE
61-166 mls/minute
12-HOUR CREATININE
0.36-1.23 g/12 hours
Performed By
North Mississippi Medical Center Pathology Department
Performing Laboratory
NMMC Pathology Department
