Specimen:
Collect
- One SST
Also Acceptable:
- One Red Top
Submit
- 1 mL (Min:0.5 mL) Serum . 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
Rejection Criteria
- Grossly Hemolyzed Samples
Stability
See Individual Components
Methodology
- See Individual Components
Performed
Mon-Fri
Reported
1-3 Day(s)
CPT Codes
- 80069
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.
Bicarbonate may be falsely elevated in patients with Lactate Dehydrogenase values greater than 2000 U/L.
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.
Bicarbonate may be falsely elevated in patients with Lactate Dehydrogenase values greater than 2000 U/L.
Components
- 1021 - ALBUMIN
- 1016 - CALCIUM
- 1025 - CARBON DIOXIDE
- 1024 - CHLORIDE
- 1014 - CREATININE, SERUM
- 1040 - GFR ESTIMATION
- 1023 - GLUCOSE
- 1012 - PHOSPHORUS, INORG
- 1027 - POTASSIUM
- 1030 - ANION GAP
- 1029 - BUN/CREAT.RATIO
- 1026 - SODIUM
- 1022 - UREA NITROGEN
Last Updated: November 3, 2025 @ 10:13 am
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It is preferable to locate tests on the website and not rely on printed test information, which may soon be out of date. Updated test information can only be guaranteed by using this website.
