FAST GFR: Pilot Study to Evaluate the Safety of the FAST GFR Test in Patients.

A rapid and accurate measurement of glomerular filtration rate (GFR) is important in acute
kidney injury (AKI) and chronic kidney disease (CKD) for assessment of impairment, diagnosis,
and prompt treatment. FAST BioMedical is an emerging technology company whose mission is to
quantify clinically meaning ful physiological parameters that have been difficult or
impossible to measure. GFR is the most clinically relevant metric for understanding renal
function, as it is the rate by which the kidney is able to filter waste products in the
bloodstream. The FAST mGFR is for direct measurement of GFR that relies on reading the ratio
of fluorescent markers attached to different size dextran molecules introduced into the
bloodstream. The test is intended as an adjunct to current methods utilized to assess kidney
function.

Inclusion Criteria for Groups 1-3:

- Female subjects: women must have a negative urine pregnancy test at screening and
before dosing on Visit 2 and be either confirmed by the Investigator to be infertile
or using a reliable method of contraception Male subjects: reproductively active men
must agree to either practice abstinence or utilize adequate contraception.

- Ages 19 to 75

- Subject's screening must fall into one of the available categories of estimated
glomerular filtration rate (eGFR) renal function: ≥ 60 mL/min for stage normal
function; 30-59 mL/min for stage 3, moderate CKD; 15-29 mL/min for stage 4, severe
CKD,

- Patients must not be on inotropes or vasopressors, and must be absent of significant
hemodynamic instabilities.

- Patients must have ceased use of the following:

- nonsteroidal anti-inflammatory drugs - 6 days prior,

- herbal supplements - 6 days prior to testing and

- cimetidine and trimethoprim - 14 days prior to testing.

- Ability to comply with study conditions

Inclusion Criteria for Group 4:

- Female subjects; women must have a negative urine pregnancy test at screening and before
dosing on Visit 2 and be either confirmed by the Investigator to be infertile or using a
reliable method of contraception.

Male subjects: reproductively active men must agree to either practice abstinence or
utilize adequate contraception.

- Ages 19 to 75

- For cohort 4: patients diagnosed with [either RIFLE stage I or Acute Kidney Injury
Network (AKIN) stage 2 AKI]

- Patients must not be on inotropes or vasopressors, and must be absent of significant
hemodynamic instabilities.

- Patients must be without evidence of clinically significant liver dysfunction

- Ability to comply with study conditions

Exclusion Criteria for Groups 1-3:

- Positive history of any clinically significant allergic or negative reactions, side
effects, or anaphylaxis to sulfa, iodine, dyes, shellfish, isotopes or dextran
molecules

- Previous history of nephrectomy or kidney transplant

- A body weight below 40kg

- A body mass index <17 or >40

- Subjects using Coumadin (Warfarin) who have an INR >4 at Screening or pre-dose on
Visit 2

- Past history of liver disease or screening Liver Function tests which exceed 1.5 times
the upper limit of normal or an albumin of < 2mg/dl.

- Clinically significant illness within 4 weeks or a clinically significant infection
within 4 weeks of screening

- Received blood, donated blood, have clinically significant on-going bleeding, changing
haemoglobin, or experienced significant blood loss within 2 weeks of dosing

- Subjects with significant abnormal findings upon physical examination, vital signs,
ECG, or clinical laboratory results at Screening

- Subjects with a supine blood pressure after resting for at least 5 minutes outside the
90-145 (systolic) or mmHg or 50-95 mmHg (diastolic) range

- Subjects with a supine (ECG) heart rate outside 45-105 beats/min after resting for at
least 5 minutes.

- Subjects with a known or suspected history of drug or alcohol misuse within 6 months
prior to screening, subjects who have consumed alcohol within 48 hours of dosing, or
subjects who the Investigator believes to be unfit to participate in the study due to
abuse of illegal or controlled substances.

- Subjects who had a positive result for Hepatitis B surface antigen (HBsAg) or
Hepatitis C virus antibody (HCVAb) screen.

- Subjects who have been diagnosed with acquired immune deficiency syndrome (AIDS), or
test positive for human immunodeficiency virus (HIV).

- Subjects who participated in another clinical trial less than 1 month prior to dosing,
or who are currently enrolled in another clinical trial.

- Subjects who have any condition that:

- Would make him/her, in the opinion of the Investigator, unsuitable for the study

- Whose condition is likely to deteriorate

- Who, in the opinion of the Investigator, is not likely to complete the study for
any reason

Exclusion Criteria for Group 4:

- Positive history of any clinically significant allergic or negative reactions, side
effects, or anaphylaxis to sulfa, iodine, dyes, shellfish, isotopes or dextran
molecules

- Previous history of nephrectomy or kidney transplant

- A body weight below 40kg

- A body mass index <17 or >40

- Current use of prescribed anticoagulants

- Past history of liver disease or screening Liver Function tests which exceed 1.5 times
the upper limit of normal or an albumin of < 2mg/dl.

- Received blood, donated blood, have clinically significant on-going bleeding, changing
haemoglobin, or experienced significant blood loss within 2 weeks of dosing

- Subjects with a supine blood pressure after resting for at least 5 minutes outside the
90-145 (systolic) or mmHg or 50-95 mmHg (diastolic) range

- Subjects with a supine (ECG) heart rate outside 45-105 beats/min after resting for at
least 5 minutes.

- Subjects with a known or suspected history of drug or alcohol abuse within 6 months
prior to admission, who have a positive drug test or alcohol test, or who have
consumed alcohol within 24 of testing

- Subjects who had a positive result for Hepatitis B surface antigen (HBsAg) or
Hepatitis C virus antibody (HCVAb) screen.

- Subjects who have been diagnosed with acquired immune deficiency syndrome (AIDS), or
test positive for human immunodeficiency virus (HIV).

- Subjects who participated in another clinical trial less than 1 month prior to dosing,
or who are currently enrolled in another clinical trial.

- Subjects who have any condition that:

- Would make him/her, in the opinion of the Investigator, unsuitable for the study

- Whose condition is likely to deteriorate

- Who, in the opinion of the Investigator, is not likely to complete the study for
any reason