Vitamins A, E, and C (retinol, alpha-tocopherol, ascorbic acid) and beta-carotene

ND-recommended test reviewed: vitamin A/E/C and beta-carotene panel.
Indications reviewed: general fatigue/wellness; no malabsorption, bariatric surgery, restrictive diet, or alcohol-use risk factor identified.
Not ordered. Rationale discussed: no validated indication for routine testing without a specific risk factor; beta-carotene has no established diagnostic use. Ref: ESPEN 2022 micronutrient guideline.
Patient informed test available privately via ND. Patient given info page: https://labs.ajaxharwoodclinic.com/vitamins-a-e-c/patient
Revisit if: a malabsorption condition, bariatric surgery, restrictive diet, or heavy alcohol use is identified.

Indicated when

• —Vitamin A or vitamin E: a known fat-malabsorption state (e.g., cholestatic liver disease, exocrine pancreatic insufficiency, cystic fibrosis, inflammatory bowel disease with malabsorption) or after malabsorptive bariatric surgery, where structured postoperative nutritional and metabolic monitoring, including fat-soluble vitamin levels, is standard [1, 2, 3]
• —Vitamin C: suspected scurvy in a patient with a severely restricted diet, food insecurity, heavy alcohol use, or another recognized risk factor, especially with compatible findings (perifollicular hemorrhage, gum disease, poor wound healing, joint pain); vitamin C deficiency is more prevalent in hospitalized and high-risk adults in high-income countries than commonly assumed, with a pooled prevalence of 27.7% in one scoping review [4]

Not indicated when

• —Routine addition to a wellness panel, fatigue workup, or 'antioxidant status' check without a malabsorption risk factor or a diet/alcohol history suggesting deficiency
• —Beta-carotene: no validated diagnostic indication was identified in this session; a low or high beta-carotene level does not reliably establish vitamin A status or change management on its own (see evidence_notes)

Why not

Outside a recognized risk factor (malabsorption, restrictive diet, alcohol use, bariatric surgery), these levels are not a validated part of a general fatigue or wellness workup. The ESPEN micronutrient guideline notes that inflammation affects the interpretation of many micronutrient levels, so a result drawn during an acute illness or with an elevated CRP can be misleading without that context [1]. Ordering a panel of several vitamins at once in a low-risk patient increases the chance of a borderline or spuriously abnormal result that prompts unnecessary supplementation or repeat testing, without addressing the actual cause of symptoms like fatigue.

Better first step

Take a diet, alcohol, and gastrointestinal history first. If there is a genuine malabsorption risk (bariatric surgery, known pancreatic or liver disease, inflammatory bowel disease, cystic fibrosis) or a scurvy risk factor (restricted diet, alcohol use, food insecurity), test the specific vitamin(s) that fit that risk rather than a broad panel; otherwise address the presenting concern directly.

Typical ND rationale

An ND may order an antioxidant or fat-soluble vitamin panel reasoning that subclinical deficiencies in vitamins A, E, or C could contribute to fatigue, immune complaints, or skin and healing problems, and that checking levels rules this out or catches a deficiency before it becomes symptomatic. Ontario ND-marketed 'Nutrient Panel Plus' and LifeLabs Vitamin Panel products bundle vitamin A, C, and E together with other vitamins and minerals as a matter of course [5, 6].

Ontario coverage & CONO orderability

OHIP status

insured

Vitamin A (retinol), ascorbic acid (vitamin C), and carotene (beta-carotene) are each listed by name, without a stated clinical-criteria restriction, in the 2026 Schedule of Benefits for Laboratory Services (L260 Vitamin A, L019 Ascorbic acid, L049 Carotene), so each is insured when a physician orders it after clinically assessing the patient [7, 8, 9]. Alpha-tocopherol (vitamin E) does NOT appear by name anywhere in the 2026 Schedule, so its coverage status is separately recorded as unverified, not insured; it is not the same line item as the others in this bundled record. ND-ordered testing of any of these is patient-paid regardless of the underlying insured status (Reg. 552 s.22; [12]).

CONO orderable

Yes — CONO list #108, #10, #25, #27

CONO list, blood: item 108 'Retinol, Vitamin A'; item 10 'Alpha tocopherol - Vitamin E'; item 25 'Ascorbic Acid (ascorbate) Vitamin C'; item 27 'Beta-Carotene (Carotene)'. Vitamin A, C, and E (but not beta-carotene by name) are bundled into Ontario ND-marketed panels: Georgina Naturopathic's 'Nutrient Panel Plus' [5] and LifeLabs' ON/SK 'Vitamin Panel' [6].

Linked conditions

• tired ↗
• Celiac disease ↗

Counselling script

“These vitamin levels really matter when there's a specific reason to check them, like malabsorption from bariatric surgery, pancreas or liver disease, cystic fibrosis, or a diet and alcohol history that puts you at risk for scurvy. Do any of those apply to you? If not, I wouldn't order this panel routinely for fatigue or wellness, since there's no risk factor here to interpret an abnormal result against; let's focus on what's actually causing how you're feeling instead.”

Revisit if

• —A malabsorption condition, bariatric surgery, cystic fibrosis, or cholestatic liver disease is diagnosed
• —Diet history, food insecurity, or alcohol use raises concern for scurvy
• —Findings compatible with a fat-soluble vitamin deficiency (e.g., night blindness, neuropathy) or scurvy (perifollicular hemorrhage, gum disease, poor wound healing) develop

References

1. [1]European Society for Clinical Nutrition and Metabolism (ESPEN) (2022). ESPEN micronutrient guideline. linkThis guideline addresses assessment, monitoring, and the impact of inflammation on interpretation for 26 micronutrients including vitamins A, C, and E, and proposes monitoring in at-risk diseases
2. [2]AACE/TOS/ASMBS/OMA/ASA (2019). Clinical Practice Guidelines for the Perioperative Nutrition, Metabolic, and Nonsurgical Support of Patients Undergoing Bariatric Procedures - 2019 Update. linkPerioperative bariatric guideline calls for a team approach to care with special attention to nutritional and metabolic issues, supporting structured postoperative micronutrient monitoring
3. [3]American Gastroenterological Association (AGA) (2023). AGA Clinical Practice Update on the Epidemiology, Evaluation, and Management of Exocrine Pancreatic Insufficiency: Expert Review. linkRoutine supplementation and monitoring of fat-soluble vitamin levels is a Best Practice Advice for exocrine pancreatic insufficiency, which includes cystic fibrosis and chronic pancreatitis
4. [4]Golder et al. (2024). Prevalence, risk factors, and clinical outcomes of vitamin C deficiency in adult hospitalized patients in high-income countries: a scoping review. linkVitamin C deficiency has a pooled prevalence of 27.7% in hospitalized adults in high-income countries, with high prevalence in severe acute illness, poor nutritional status, and excess alcohol/tobacco use as independent risk factors
5. [5]Georgina Naturopathic (2026). Nutrient Panel Plus (Morning, Fasting) - product contents. linkAn Ontario ND clinic's 'Nutrient Panel Plus' product includes vitamin A, vitamin C, and vitamin E among its listed analytes
6. [6]LifeLabs (2026). Ontario and Saskatchewan Patient Assessment Panels (Assessment Summary, effective July 2026) - Vitamin Panel contents. linkLifeLabs' Ontario/Saskatchewan 'Vitamin Panel' product includes vitamin A, vitamin C, and vitamin E among its listed analytes
7. [7]Ontario Ministry of Health (2026). Ontario Health Insurance Plan: Schedule of Benefits for Laboratory Services (effective April 1, 2026) - L260 Vitamin A. linkVitamin A is listed by name in the 2026 Schedule of Benefits for Laboratory Services
8. [8]Ontario Ministry of Health (2026). Ontario Health Insurance Plan: Schedule of Benefits for Laboratory Services (effective April 1, 2026) - L019 Ascorbic acid. linkAscorbic acid (vitamin C) is listed by name in the 2026 Schedule of Benefits for Laboratory Services
9. [9]Ontario Ministry of Health (2026). Ontario Health Insurance Plan: Schedule of Benefits for Laboratory Services (effective April 1, 2026) - L049 Carotene. linkCarotene is listed by name in the 2026 Schedule of Benefits for Laboratory Services
10. [10]Ontario Ministry of Health (2026). Ontario Health Insurance Plan: Schedule of Benefits for Laboratory Services (effective April 1, 2026). linkCommunity lab tests are insured only when ordered under the Schedule by an authorized prescriber
11. [11]Government of Ontario (e-Laws) (2026). Health Insurance Act, R.R.O. 1990, Reg. 552: General, s. 22 (insured laboratory services). linkA lab test is insured only when ordered by a physician, midwife, or NP who has clinically assessed the patient
12. [12]Ontario Ministry of Health (2026). Ontario Health Insurance Plan: Schedule of Benefits for Laboratory Services (effective April 1, 2026). linkTests ordered by anyone other than an authorized provider, including NDs, are not insured services