The data below are derived from Huang N, Foster M, Lentine K et al. Estimated GFR for living kidney donor evaluation. American Journal of Transplantation [epub ahead of print Nov 23 2015].
You can use the numbers above or a different number based on knowledge of your patient’s medical history. For example, if your patient has a strong family history of CKD, you may wish to alter the pretest probability. If so, write the number to be used as pre-test probability in table below.
Based on the information supplied:
|Estimated GFR from creatinine||ml/min per 1.73 m2|
|Estimated GFR from creatinine-cystatin C||ml/min per 1.73 m2|
|Measured GFR Thresholds|
†Post test probability of mGFR above or below the threshold based on eGFRcr. If you are interested in the opposite of the threshold (eg < 80), then subtract the value given from 100.
‡If you also indicated the eGFRcr-cys, the calculator will use the post-test probability from the eGFRcr as the pre-test probability and use it to compute the post-test probability from eGFRcr-cys. If you are interested in the opposite of the threshold (eg < 80), then subtract the value given from 100.
|Post-test probability from eGFRcr†|
|Post-test probability from eGFRcr-cys‡|