Table 1.
Stepsa | PEG 3350 | Control | Polysorbate 20 | Polysorbate 80 | mRNA COVID-19 vaccine | |||
---|---|---|---|---|---|---|---|---|
MiraLAX (170 mg/mL) | Methylprednisolone acetate (40 mg/mL) | Methylprednisolone sodium (40 mg/mL) | Polysorbate 20 (0.5 mg/mL) | Triamcinolone acetonide (40 mg/mL) | Refresh eye drops | Prevnar 13 vaccine | Pfizer-BioNTech (lot number ER8731) | |
Step 1 | 1:100 SP (0) | 1:1 SP (0) | 1:1 SP (0) | 1:1 SP (0) | 1:1 SP (0) | 1:1 SP (0) | 1:10 SP (0) | 1:1 SP (0) |
Step 2 | 1:10 SP (0) | 1:100 ID (0) | 1:100 ID (0) | 1:100 ID (0) | 1:10 ID (3 × 3 wheal, 7 × 7 flare) | 1:100 ID (0) | ||
Step 3 | 1:1 SP (0) | 1:10 ID (0) | 1:10 ID (0) | 1:10 ID (0 wheal, 4 × 4 flare) | ||||
Step 4 | 1:1 ID (3 × 3 wheal, 8 × 8 flare) |
Abbreviations: COVID-19, coronavirus disease 2019; ID, intradermal; PEG, polyethylene glycol; mRNA, messenger RNA; SP, skin prick.
Controls done before testing include control prick (0), histamine 6 mg/mL SP (3 × 3 flare).