def METHOD_NAME(testapp, award, lab, submitter, biosample, attachment):
    item = {
        'characterizes': biosample['@id'],
        'award': award['@id'],
        'lab': lab['@id'],
        'attachment': attachment,
        'review': {
            'status': 'exempt from standards',
            'lab': lab['@id'],
            'reviewed_by': submitter['@id'],
        },
    }
    return testapp.post_json('/biosample_characterization', item).json['@graph'][0]