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Cystatin C with eGFR

Item Value
Available Stat? No
Test code CYSTAC
Performed by Mayo
Sendout? Yes
Method Immunoturbidimetric
Container type Red top or Gold top
Amount to Collect 2 mL
Sample type Serum
Preferred volume 1.0 mL
Min. Volume 0.5 mL
Processing notes Aliquot specimen and transport to CB ambient. Order Mayo test code CYSTC
Ref Lab Rejection Criteria Gross Hemolysis
Units mg/L
Normal range Males:

0 days-22 years: no reference values established
23-29 years: 0.60-1.03 mg/L
30-39 years: 0.64-1.12 mg/L
40-49 years: 0.68-1.22 mg/L
50-59 years: 0.72-1.32 mg/L
60-69 years: 0.77-1.42 mg/L
70-79 years: 0.82-1.52 mg/L
>79 years: no reference values established

Females:

0 days-22 years: no reference values established
23-29 years: 0.57-0.90 mg/L
30-39 years: 0.59-0.98 mg/L
40-49 years: 0.62-1.07 mg/L
50-59 years: 0.64-1.17 mg/L
60-69 years: 0.66-1.26 mg/L
70-80 years: 0.68-1.36 mg/L
81-86 years: 0.70-1.45 mg/L
>86 years: no reference values established

eGFR

>60 mL/min/BSA

eGFR will not be calculated for patients under 18 years.
Stability 7 days (any temperature)
Turn around times 3-5 days
Additional information An index of glomerular filtration rate, especially in patients where serum creatinine may be misleading (eg, very obese, elderly, or malnourished patients)

Assessing renal function in patients suspected of having kidney disease

Monitoring treatment response in patients with kidney disease
CPT coding 82610-90
LOINC code 33863-2
Last Updated 8/18/2016 9:53:18 AM
Entry Number 1744
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