FMReview Index of Abbreviations

Dr. Michael Ruscio’s Monthly – Future of Functional Medicine Review Clinical Newsletter

Practical Solutions for Practitioners

Index of Abbreviations

AI Autoimmunity
AIP Autoimmune Paleo Diet
AITD Autoimmune Thyroid Disease
ASD Autism Spectrum Disorder
CBC Complete Blood Count
CHO Carbohydrate
CMP Complete Metabolic Panel
CO Constant
CSU Chronic Spontaneous Urticaria
DAO or Serum DAO diamine oxidase (digestive enzyme responsible for histamine breakdown/elimination)
Ddx differential diagnosis
DHEA Dehydroepiandrosterone (hormone produced in adrenal glands)
Dialysis / LC-MS Dialysis with mass-spectrometry methodology (testing mechanism for T4 and FT3)
DX Diagnosis
EBV Ebstein Barr Virus
ET Eradication Therapy
FMT Fecal Microbiota Transplant
FODMAP Fermentable Oligosaccharides, Disaccharides, Monosaccharides and Polyols (short-chain carbohydrate)
FT3 Free T3 (Free Triiodothyronine)
FT4 Free T4 (Free Thyroxine)
GI Gastrointestinal
HFD High-Fat Diets
H. pylori Helicobacter pylori (bacteria in the digestive tract)
Habx Herbal Antibiotics
HCl Hydrochloric acid (gut enzyme)
HHRT Herbal Hormone Replacement Therapy
HI Histamine intolerant
HIT Histamine intolerance
HRD Histamine Reduced Diet
IBD Inflammatory Bowel Disease
IBS Irritable Bowel Syndrome
IBS-D Irritable Bowel Syndrome with Diarrhea
IBS-SSS Irritable Bowel Syndrome – Severity Scoring System (assists in the diagnosis and    assessment of IBS)
IgG Immunoglobulin G
INT Intermittent
Lacto / Biff Lactobacillus / Bifidobacterium
LIBO Large Intestinal Bacterial Overgrowth
MCAS Mast cell activation syndrome
MCAD Mast cell activation disorder
MF Modified Fast
MOD Moderate (in terms of symptom severity)
NRT Nutrient Replacement Therapy
PANDAS Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcal Infections
RA Rheumatoid Arthritis
RX Prescription / Medications
RXNS reactions (ex: “use one at a time because rxns have been noted”)
S. boulardii Saccharomyces boulardii (probiotic)
SCD Specific Carbohydrate Diet
SBI Serum Bovine Immunoglobulins
SIBO Small Intestinal Bacterial Overgrowth
SIFO Small Intestinal Fungal Overgrowth
STC Slow Transit Constipation
T3 Triiodothyronine (Thyroid Hormone)
T4 Thyroxine (Thyroid Hormone)
TPO Thyroid peroxidase (an enzyme found in the thyroid gland)
TPOAb Thyroid peroxidase antibody
TSH Thyroid Stimulating Hormone
TT3 or tT3 Total Triiodothyronine
TT4 or tT4 Total Thyroxine
UP Ulcerative Proctitis
WNL within normal limits

4 thoughts on “FMReview Index of Abbreviations”

    1. Drew, CNC (Ruscio Institute Team)

      Hi Margaret,

      Dr Ruscio isn’t sharing that at the moment but additional materials like test codes, paperwork, forms, and protocols will be rolled out in a future practitioner training course.

  1. Hi, Thank you for all the amazing content Dr Ruscio and team ? Quick question and sorry if this is already answered elsewhere, but what does the abbreviation ‘Habx’ stand for? Just reading a recent case study and I see it used a few times. Looking forward to making my way through them all… This really is invaluable! Thanks a million.

    1. Drew, CNC (Ruscio Institute Team)

      Hi Angie,

      It stands for Herbal Antibiotics. Thanks for the question, we’ll add it to the abbreviations list!

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