Cramer Weighs In On DexCom, Quidel And Gan

On CNBC's "Mad Money Lightning Round," Jim Cramer spoke about DexCom, Inc. DXCM. He would start a position in the name.

Quidel Corporation QDEL is good, thinks Cramer. He likes the diagnostics segment so much.

Cramer can't figure out Gan Ltd GAN.