# ISNA

## Content

This function, Is Not Available, tests whether a value, an expression or contents of a referenced cell has the not available (#N/A) error value.

## Syntax

`ISNA(cellreference)`

`ISNA(value)`

`ISNA(expression)`

## Arguments

Specify a cell reference, a numeric or text value, or an expression for the argument.

## Remarks

Use this function to test the contents of a cell, a numeric or text value directly, or a function or expression.

This function returns TRUE if the value is or refers to the Not Available error value, and returns FALSE if the value is or refers to a cell with no data.

## Data Types

Accepts any data type for an argument. Returns Boolean (TRUE or FALSE) data.

## Examples

`ISNA(B12)`

`ISNA(R12C2)`

`ISNA(#N/A)` gives the result TRUE

`ISNA(NA())` gives the result TRUE

`ISNA(#REF)` gives the result FALSE