I can roundtrip GUID 75b097d1-b891-4834-9b12-4a94d8c42504 with the following node repl code:

> const uuid = require('uuid')
> uuid.parse('75b097d1-b891-4834-9b12-4a94d8c42504')
Uint8Array(16) [
  117, 176, 151, 209, 184,
  145,  72,  52, 155,  18,
   74, 148, 216, 196,  37,
    4
]
> const a = uuid.parse('75b097d1-b891-4834-9b12-4a94d8c42504')
undefined
> uuid.stringify(a)
'75b097d1-b891-4834-9b12-4a94d8c42504'

But I suspect the byte representation is not as expected. I would expect the byte array to be [209, 151, 176, 117, 145, 184, 52, 72, 155, 18, 74, 148, 216, 196, 37, 4]. I found a gist at https://gist.github.com/daboxu/4f1dd0a254326ac2361f8e78f89e97ae that produces that array from 75b097d1-b891-4834-9b12-4a94d8c42504 and it's also what is produced by fx. C# / .NET.