What "5% thymoquinone" actually means.

If you've shopped for black seed oil in the last two years, you've probably seen claims like "TQ X3," "TQ X5," or "5% thymoquinone." Some brands go higher — 10×, 20%, occasionally numbers that look like they belong on a vitamin C bottle. The bigger numbers feel more reassuring. They imply more of the active compound, more value, more potency.

The reassurance is misleading, because the number on the label depends on which lab measured it and how. Two brands can sell genuine cold-pressed oil from the same farm, send identical bottles to different labs, and come back with results that differ by a factor of ten or more. Both labs are honest. Both numbers are real. They're just measuring different things.

This guide explains how to read the percentage on a black seed oil label well enough to know which method produced it — and which method tells you what's actually in the bottle you're about to swallow.

The two methods, side by side.

Thymoquinone is the molecule most commonly associated with black seed oil's effects. It is volatile — meaning it evaporates off when exposed to heat — and it sits within the fixed oil at room temperature in a small but measurable amount. When a lab measures thymoquinone, it can do so in one of two main ways:

Both are real, scientifically valid lab procedures. A peer-reviewed analytical chemist would sign off on either one. The difference is what they measure: HPLC-UV measures the oil, GC-MS measures the vapor.

You don't drink the vapor.

Why the same number means different things.

Imagine measuring the alcohol content of wine. By weight in the bottle, a glass of red wine is roughly 12% alcohol. But if you let the wine sit in a hot pan and capture only the steam, that steam is almost 100% alcohol — because alcohol evaporates faster than water. Both numbers are technically real. Only one tells you what's in the glass you're drinking.

Black seed oil works the same way. Thymoquinone is volatile; it evaporates faster than the rest of the oil. If a lab heats the oil and measures only the steam, thymoquinone makes up a much higher percentage of that steam than it does of the oil it came from. The 22–35% number isn't fraudulent — it's just measuring the steam. The number that reflects what's in your bottle, ready to drink, is the HPLC-UV number on the unheated oil.

A 2022 analytical study in the journal Nutrients tested eleven commercial black seed oils and found a 263× spread in measured thymoquinone across products. That spread isn't because some bottles are 263× more potent than others. It's because the lab methods vary, the source seed varies, and most brands don't disclose either choice. The buyer is looking at numbers stripped of context.

What "TQ X3" and "TQ X5" actually mean.

"TQ X3" and "TQ X5" are not standardized scientific terms. They are marketing constructs. The "X" is a multiplier, and the baseline it's multiplied against is rarely defined on the label.

In practice, when these labels appear on a bottle, the underlying number is almost always derived from GC-MS on the volatile fraction — the method that produces the bigger number. The "3×" or "5×" is then a multiple of an arbitrary reference point chosen by the brand. There is no FDA-mandated standard for this term. There is no industry-wide convention for what counts as "X1." A "TQ X5" bottle from one brand may not represent five times the thymoquinone of another brand's "TQ X1."

What you can do as a buyer is ask one question: which lab method produced this number? If the answer isn't on the label, the COA, or the product page, the number is decorative.

What real black seed oil tests at, by HPLC-UV.

For cold-pressed black seed oil from quality Ethiopian seed (Bale and Arsi highlands, day-75+ harvest), measured by HPLC-UV on the fixed oil, the legitimate range is roughly:

• Below 0.5%: Either the seed quality is poor, the bottle has been heat-extracted (which destroys thymoquinone), or the oil has been adulterated with cheaper carriers like sunflower or canola oil.
• 1.5% – 4.6%: The legitimate range for genuine cold-pressed Ethiopian-origin oil. Most well-pressed bottles fall in the middle of this range.
• 5% – 10% by HPLC-UV: Possible but unusual. Worth verifying with a follow-up lab test.
• 20%+: Almost certainly a GC-MS reading on the volatile fraction, not HPLC-UV. The bottle isn't 20% thymoquinone in any way that affects what you ingest.

Egyptian and Indian-origin oil typically tests lower by HPLC-UV than Ethiopian (often 0.5%–1.5%) — not because the test is wrong, but because the seed itself develops less thymoquinone in those growing conditions. The origin question is its own conversation.

The honest version of "potency."

Potency in black seed oil is a stack of decisions, not a single number. The seed origin matters. The harvest day matters. The press temperature matters (above 60°C and the volatile compounds break down). The bottle matters (light and heat oxidize the oil). The shelf time matters. The lab method matters most of all.

A bottle that prints "4.2% thymoquinone, measured by HPLC-UV on the fixed oil, on Batch 2026-001" tells you what's actually in the oil you're about to drink. A bottle that prints "TQ X5" or "30% thymoquinone" with no method named tells you the brand chose the bigger number. Both can be technically real. Only one is operationally honest.

The right question to ask any black seed oil brand is not "what's the percentage?" It's "which method, on which fraction, on which batch?"

How habb prints the number.

habb tests every batch by HPLC-UV on the fixed oil. We name the method on the lab card that ships in the box. We publish the actual measured value for the bottle in your hand — not a brand average, not a marketing multiplier. The conservative method, on every batch, with the lot number that matches your bottle. The full method comparison and per-batch lookup live on how it's made.