# CockCroft Gault Equation

### CockCroft Gault Equation is an equation which is used to calculate the CrCl (Creatinine Clearance) of a patient

### Unit:- mL/min

#### It takes the following parameters
| Parameter | Range | unit |
| --------- | ----- | ---- |
| Age | 18-95 | - |
| Serum Creatinine | 0.2 - 20 | mg/dL |
| weight | 10 - 100 | kg |
| Gender | - | - |


### Formula
#### It uses the following formula to calculate the CrCl
$$
CrCl = \frac{(140 - Age) \times \text{Weight}}{(72 \times S. Creatinine)} \times 0.85 \text{(if patient is female)}
$$

## Interpretation
#### GFR can be interpreted by using the following table
| Range of GFR | Stage  | Message |
| ------------ | ----- | ------------------ |
| more than 90 mL/min | CKD Stage 1 | Renal Function is normal |
| 60 - 90 mL/min | CKD Stage 2 | Renal Function is slightly reduced |
| **45 - 60 mL/min** | **CKD Stage 3A** | **Renal Function is moderately reduced** |
| **30 - 45 mL/min** | **CKD Stage 3B** | **Renal Function is significantly reduced** |
| **15 - 30 mL/min** | **CKD Stage 4** | **Renal Function is largely reduced** |
| **less than 15 mL/min** | **CKD Stage 5 / ESRD** | **Renal Function is severely reduced** |

### Notice:-
#### This equation of calculating Creatinine Clearance  is not as accurate, other equations like MDRD and CKD-EPI are recommended. Equation is not reliable in the cases of AKI (Acute Kidney Injury). Consultation with a Nephrologist is always recommended. No diagnosis should be made just on the basis of a medical calculator. Other clinical clues are to be taken into account (Urinalysis, UACR(Urine Albumin to Creatinine Ratio) etc.)
