Specimen:
Collect
- One SST
Also Acceptable:
- One Green Top (Li Heparin)
- One Red Top
Submit
- 1 mL (Min:0.5 mL) Serum . Submit Refrigerated. Submit in a Standard Transport Tube.
Also Acceptable:
- 1 mL (Min:0.5 mL) Plasma . Submit Refrigerated. Submit in a Standard Transport Tube.
Special Handling
- Allow specimen to clot completely at room temperature
- Avoid Repeated Freeze/Thaw Cycles
- Separate from cells ASAP
- Cap sample to avoid evaporation.
Rejection Criteria
- EDTA plasma
- Hemolyzed specimens
Stability
Ambient: 8 Hour(s); Refrigerated: 2 Day(s); Frozen: 2 Week(s); Incubated: Unacceptable
Methodology
- See Individual Components
Performed
Sun-Sat
Reported
1-2 Day(s)
CPT Codes
- 80053
Interpretive Data
Please see report for interpretive data.
ESTIMATED GFR Reference Range:
GFR = Greater than or equal to 90: Normal or increased GFR.
GFR = 60-89: Mild decreased GFR.
GFR = 30-59: Moderate decreased GFR.
GFR = 15-29: Severe decreased GFR.
GFR = Less than 15: Kidney Failure.
When found over a three month period, GFR less than 60 indicates Chronic Kidney Disease.
GFR calculation is not valid for patients under age 18 years.
Please note: the equation for eGFR calculation has been updated to the 2021 CKD-EPI Creatinine equation as recommended by the National Kidney Foundation and Association for Diagnostics and Laboratory Medicine.
ESTIMATED GFR Reference Range:
GFR = Greater than or equal to 90: Normal or increased GFR.
GFR = 60-89: Mild decreased GFR.
GFR = 30-59: Moderate decreased GFR.
GFR = 15-29: Severe decreased GFR.
GFR = Less than 15: Kidney Failure.
When found over a three month period, GFR less than 60 indicates Chronic Kidney Disease.
GFR calculation is not valid for patients under age 18 years.
Please note: the equation for eGFR calculation has been updated to the 2021 CKD-EPI Creatinine equation as recommended by the National Kidney Foundation and Association for Diagnostics and Laboratory Medicine.
Components
- 1023 - GLUCOSE
- 1022 - UREA NITROGEN
- 1014 - CREATININE, SERUM
- 1040 - GFR ESTIMATION
- 1029 - BUN/CREAT.RATIO
- 1016 - CALCIUM
- 1027 - POTASSIUM
- 1026 - SODIUM
- 1024 - CHLORIDE
- 1030 - ANION GAP
- 1020 - PROTEIN
- 1021 - ALBUMIN
- 1031 - GLOBULIN
- 1028 - A/G RATIO
- 1019 - BILIRUBIN, TOTAL
- 1011 - ALKALINE PHOS
- 1010 - AST(SGOT)
- 1025 - CARBON DIOXIDE
- 2046 - ALT(SGPT)
Last Updated: May 11, 2025 @ 9:13 am
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