How to test method with 'out' parameter(s)?

I am trying to write a unit test for a method that has out parameters. My method specifically is a TryParse method for my custom object. I am using .NET 4.5/5 with Visual Studio 2013. This allows me to fully realize private/internal and static objects using the PrivateType object. The one thing that seems to escape me is how to test for the out parameter as I cannot use this keyword in the InvokeStatic method. I am looking for the proper solution to test this architecture design.

The use for TryParse is part of a TypeConverter process as outlined in the WebAPI Parameter Binding post By Mike Wilson

public class MyFilter
{
    public string Field { get; set; }
    //... removed for brevity

    internal static bool TryParse(string sourceValue, out MyFilter filter)
    {
        //... removed for brevity
    }
}

public class MyFilterTests
{
    [TestMethod]
    [TestCategory("TryParse")]
    public void TryParseWithTitleOnly()
    {
        var stringSource = "{field:'DATE.FIELD'}";

        MyFilter tryParseOut = null;

        var target = new PrivateType(typeof(MyFilter));

        var tryParseReturn = target.InvokeStatic("TryParse", stringSource, tryParseOut);

        var expectedOut = new MyFilter()
        {
            Field = "DATE.FIELD"
        };

        Assert.IsTrue((bool)tryParseReturn);
        Assert.AreEqual(expectedOut, tryParseOut);
    }
}