The tag lab appears in these 33 comics:

• 1: (01/23/2012) The Exploding Trashcan (Tags: mike, chris, cesium, lab)
• 2: (01/24/2012) So simple... (Tags: mike, chris, lab)
• 3: (01/25/2012) Be careful what you say... (Tags: mike, chris, emmet, lab)
• 4: (01/26/2012) A ridiculous waste of time (Tags: mike, chris, lab)
• 5: (01/27/2012) Keep your pants on, too (Tags: mike, chris, lab)
• 6: (1/28/2012) Putting an end to it (Tags: mike, chris, lab)
• 12: (3/10/2012) Maps (Tags: ashley, marty, mike, lab)
• 14: (3/25/2012) Calm before the storm (Tags: mike, chris, ashley, lab, tornado)
• 15: (3/31/2012) The tempest (Tags: mike, lab, tornado)
• 16: (4/7/2012) Beware of snapping turtle (Tags: chris, ashley, lab, tornado)
• 18: (4/21/2012) Out, damned spot! (Tags: mike, laser, chris, ashley, lab)
• 21: (5/12/2012) Pressganging (Tags: mike, dan, tv-reporter, lab)
• 27: (6/23/2012) Earning her way (Tags: mike, dan, miss-finance, tv-reporter, lab)
• 29: (7/7/2012) The Independence Day explanation (Tags: marty, mike, ashley, chris, lab)
• 31: (7/21/2012) Bromine barium (Tags: mike, ashley, lab)
• 37: (9/1/2012) Murder, arson, and jaywalking (Tags: mike, chris, ashley, lab)
• 49: (11/24/2012) Bug (Tags: chris, bug, mike, lab)
• 50: (12/1/2012) Lab Snacks (Tags: chris, ashley, mike, lab)
• 61: (02/16/2013) His one true love (Tags: mike, ashley, lab, newspaper)
• 67: (03/30/2013) Tourette's Versioning System (Tags: mike, ashley, marty, lab)
• 72: (05/04/2013) Illicit activities (Tags: mike, ashley, lab)
• 73: (05/11/2013) Available at every corner drug store (Tags: mike, chris, lab)
• 82: (07/13/2013) Quick fix (Tags: mike, chris, lab)
• 86: (08/10/2013) It's not easy being green (Tags: mike, chris, ashley, lab)
• 88: (08/24/2013) Lab tour (Tags: mike, ashley, carlos, lab)
• 89: (08/31/2013) Mr. Ott (Tags: mike, ashley, lab, bob, cat)
• 90: (09/07/2013) A lottery (Tags: mike, ashley, lab)
• 93: (09/28/2013) Molecule of Doom (Tags: ashley, mike, chris, lab)
• 102: (11/30/2013) Storytelling (Tags: chris, mike, lab)
• 113: (02/15/2014) One of the dangers of driving a time-traveling car (Tags: mike, chris, lab)
• 119: (03/29/2014) It is of course well known that careless talk costs lives... (Tags: marty, ashley, mike, lab)
• 123: (04/26/2014) Sweet Talk (Tags: ashley, mike, lab)
• 126: (05/17/2014) Flowers (Tags: abigail, ashley, marty, lab)