Fast Rate, Low Reserves
Fast by the ratios, low by the levels: the pattern between alarm and exhaustion
The oxidation rate comes from two ratios, so it can read fast while all four macrominerals sit below ideal. Analytical Research Labs describes the four lows pattern as exhausted fast oxidation.
Analytical Research Labs (ARL) defines the oxidation rate from two ratios: fast oxidation is a calcium/potassium (Ca/K) ratio below 4 and a sodium/magnesium (Na/Mg) ratio above 4.17. Trace Elements, Inc. places the ideals at 4.2 and 4 (2010 set), so the balance points publish as ranges: Ca/K 4 to 4.2 and Na/Mg 4 to 4.17.
Because each ratio is one level divided by another, the two ratios can read fast while all four macrominerals read below ideal. The level ideals are calcium 40 mg% (ARL) or 60 mg% (Trace Elements since 2008; 42 mg% in 1985-1993), magnesium 6 mg%, sodium 24 to 25 mg% and potassium 10 mg%. The pattern workbook Eileen reads charts against names this shape a fast oxidation rate alongside macrominerals that read low.
The workbook describes it as a mix of fast and slow oxidizer characteristics, with weaker adrenal activity as the chart moves quickly toward slow oxidation.
ARL's children's document records a progression under stress: fast oxidation with a normal sodium/potassium (Na/K) ratio of about 2.5; then fast oxidation with Na/K below 2.5; then slow oxidation, where calcium and magnesium rise and sodium and potassium fall; then the four lows pattern of calcium below 40, magnesium below 6, sodium below 25 and potassium below 10 mg%. The Na/K ideal is 2.4 (Trace Elements) to 2.5 (ARL).
ARL's 1987 All-Four-Low document states that individuals in the four lows pattern were probably at one time fast oxidizers whose adrenal activity fell under prolonged stress, so that sodium and potassium dropped below normal. It records that a fall in sodium and potassium normally causes calcium and magnesium to rise as a buffer against further stress, and that in the four lows pattern this buffering does not occur. Fast oxidation with low macrominerals carries the low levels of the four lows pattern while the Ca/K and Na/Mg ratios still read fast.
ARL's Stress Document gives fast oxidation with an Na/K below 2.5 its own name: the exhaustion stage of fast oxidation, defined as Ca/K below 4, Na/Mg above 4.17 and Na/K below 2.5. It sits second in the children's sequence, after fast oxidation with a normal Na/K and before slow oxidation. ARL's Fatigue document records a fatigue trend at any Na/K below 2.5, and names an Na/K below 1 as an important indicator of chronic fatigue.
The same document records that fast oxidizers often appear energetic, and that it is often nervous energy, especially when the oxidation rate is very rapid or the Na/K is below 2.5. It describes tired children who become hyperactive, and whose hair analysis usually shows a fast oxidizer pattern with a low Na/K ratio.
ARL's Fatigue document (1993) lists six hair indicators of fatigue, and a fast chart on low macrominerals can carry several at once: an imbalanced oxidation rate in either direction; a calcium/magnesium (Ca/Mg) ratio below 3.3 or above 10; an Na/K below 2.5; elevated toxic metals; the four-low-electrolyte pattern; and deficiencies of the trace elements zinc, manganese, copper, iron and chromium.
The Ca/Mg ideal is 6.67 (ARL) to 7 (Trace Elements, 2010). ARL records that most hair tests of people with fatigue reveal slow oxidation.
ARL's adrenal burnout material separates two low blood sugar trends by oxidation type. In fast oxidation, overactive adrenal activity converts glycogen to glucose too quickly and leaves a chronically low liver glycogen reserve, and ARL records this type as very susceptible to a later diabetes trend. In slow oxidation, the liver holds adequate glycogen but the weak adrenal response cannot mobilize it.
ARL's children's document adds that fast oxidizers can show allergy trends because they lack the adrenal reserves to handle allergic phenomena, and that low calcium and magnesium raise cell permeability. ARL's low blood sugar criteria for extreme fast oxidation are low zinc with an imbalanced Ca/Mg ratio or a high Na/K. Trace Elements' stress-stage subtypes and its 1990 Na/K stage figures are covered in the stress stages article.
| Pattern | Rate criteria | Level criteria | Source |
|---|---|---|---|
| Fast oxidation, first stage | Ca/K below 4 to 4.2, Na/Mg above 4 to 4.17 | Calcium and magnesium below ideal; sodium and potassium above; Na/K about 2.5 | ARL fast profile; ARL children's document |
| Fast oxidation with low macrominerals | Ca/K below 4 to 4.2, Na/Mg above 4 to 4.17 | All four below ideal | Pattern workbook |
| Exhaustion stage of fast oxidation | Fast, with Na/K below 2.5 | Not specified | ARL Stress Document |
| Slow oxidation | Ca/K above 4 to 4.2, Na/Mg below 4 to 4.17 | Calcium and magnesium raised; sodium and potassium low | ARL |
| Four lows | Set by levels | Calcium below 40, magnesium below 6, sodium below 25, potassium below 10 mg% (ARL level ideals) | ARL children's document |
Each row is a trend on the mineral pattern. The stress stages article covers how a chart moves from fast to slow oxidation across successive tests.
A hair tissue mineral analysis is a screening test for nutritional and toxic-element patterns. It does not diagnose, it does not establish a cause, and it does not measure what is circulating in blood today. Each mineral reading reflects roughly 2 to 3 months of hair growth. Where the laboratory literature describes a trend, that trend belongs to the mineral pattern rather than to any person reading about it.
The rate comes first, from Ca/K and Na/Mg against 4 to 4.2 and 4 to 4.17, then each of the four levels against its ideal, because a fast rate can sit on low levels. Then the Na/K ratio against 2.4 to 2.5.
On a retest 3 to 5 months later, the question is which way the levels moved: toward the first-stage fast shape, or toward slow oxidation or four lows.
Yes. The rate comes from the Ca/K and Na/Mg ratios, so both can read fast while calcium, magnesium, sodium and potassium all read below ideal.
Four lows is defined by the four levels: calcium below 40, magnesium below 6, sodium below 25 and potassium below 10 mg%. Fast oxidation with low macrominerals adds the condition that the two ratios still read fast. ARL describes four lows as exhausted fast oxidation.
ARL calls fast oxidation with an Na/K below 2.5 the exhaustion stage of fast oxidation, and records a fatigue trend at any Na/K below 2.5.
An imbalanced oxidation rate, a Ca/Mg below 3.3 or above 10, an Na/K below 2.5, elevated toxic metals, the four-low pattern, and low zinc, manganese, copper, iron or chromium.
A full hair tissue mineral analysis reports the Ca/K and Na/Mg ratios that set the rate beside the four macromineral levels and the Na/K ratio, which together show whether a fast rate sits on full or low reserves.
Published 2026-10-11 · Updated 2026-10-11
By Eileen Durfee — Practitioner, NBS (Nutritional Balancing Science), NASM-CPT; wellness educator, inventor and author.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. Hair tissue mineral analysis is a screening test. Wellness Shopping Online is operated by Nuco Enterprise Solutions LLC.
