Follow-up tests are often distinguished in terms of whether they are "planned" (a priori) or "post hoc."
fˈɑːloʊˌʌp tˈɛsts ɑːɹ ˈɔfən dɪstˈɪŋɡwɪʃt ɪn tˈɜːmz ʌv wˈɛðɚ ðeɪ ɑːɹ "plˈænd" ɐ pɹaɪˈɔːɹi ɔːɹ "pˈoʊst hˈɑːk."