Kappa/Lambda Light Chain Panel by In Situ Hybridization, Stain Only Kpa Pt Antigen Typing IRL Kappa/Lambda Quantitative Free Light Chains with Ratio, Serum KRAS Mutation Detection Kell Antigen Typing – Patient KRAS Mutation Detection with Reflex to BRAF Codon 600 Mutation Detection Kell K/k Antigen (KEL) Genotyping Keppra (Levetiracetam) Keratan Sulfate, Quantitative by LC-MS/MS, Urine Keratin 903 (K903) High Molecular Weight by Immunohistochemistry Ketamine and Metabolite Quantitative, Serum or Plasma Ki-67 with Interpretation by Immunohistochemistry 17-Ketosteroids, Urine Ki-67, MIB-1, by Immunohistochemistry Kabuki Syndrome (KMT2D) Sequencing Kidney Stone Risk Panel, Urine Kappa and Lambda Free Light Chains (Bence Jones Protein), Qualitative, Urine KIT (D816V) Mutation by PCR Kappa and Lambda Free Light Chains (Bence Jones Protein), Quantitative, Urine KIT D816V Mutation Detection by PCR for Gleevec Eligibility in Aggressive Systemic Mastocytosis (ASM)