glstrings of invalid alleles should return and empty string but sometimes return + #100
Description
'+'
(Pdb) ard.redux_gl("DR04+assDR03", 'lg')
''
This is probably because the first example looks like serology. It is invalid serology but returning a + alone is not legit.
Overall error handing needs to be reworked but this is causing a problem with the international donor/recip validation data