Sanfew serum(3)

A 3 dose Sanfew Serum.

MembersBuy limit 2,000Potions & Drinks

Wiki

Insta-buyHighest recent buy

15,359gp

Insta-sellLowest recent sell

15,924gp

SpreadBefore tax

-565gp

-3.55%

MarginAfter 2% GE tax

-872gp

-5.48% ROI

VolumeTraded in 30D

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TrendMid price, 30D

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Price history

1 points · hover for detail

Insta-buy (high)Insta-sell (low)Spread

30D low: 15,359
30D high: 15,924
Volatility: 3.6%

Flip calculator

Includes the 2% Grand Exchange tax

Buy at

Sell at

Quantity

units

Net profitLoss

-872gp

-872 per item · -5.48% ROI

Tax puts break-even at 16,248 gp.

Capital required: 15,924 gp
Gross revenue: 15,359 gp
GE tax (2%, 307/item): − 307 gp
Break-even sell: 16,248 gp

Item data

High alchemy: 144 gp99.1% below market
Low alchemy: 96 gp
Shop value: 240 gp
Weight: 0.03 kg
Skill / type: Herblore
Requires: Herblore 65
Stack / note: Not stackable · noteable
Released: Mar 13, 2007

About Sanfew serum(3)

The Sanfew serum(3) is a members-only potion in Old School RuneScape.

"A 3 dose Sanfew Serum"

Over the last 30 days it traded between 13,657 and 21,066 gp on the Grand Exchange, averaging 15,614 gp. About 1,749 units changed hands per day. The price is up 22.3% across that window. The Grand Exchange buy limit is 2,000 every 4 hours. Selling one at the average price costs 312 gp in Grand Exchange tax.

Casting High Level Alchemy returns 144 gp, which is 99.1% below the 30-day average price, so alching a bought one loses money.

How to get Sanfew serum(3)

Only Phosani's Nightmare (5/100) and The Nightmare (5/100) drop Sanfew serum(3). Only ~ Uglug's stuffsies ~ sells it. It can be made from Mixture - step 2(3) and Nail beast nails.

Dropped by

Monster	Rarity	Quantity
Phosani's Nightmare	5/100	6–12
The Nightmare	5/100	1–8

Sold in shops

Shop	Price	Stock
~ Uglug's stuffsies ~	240 gp	0

Recipes

Where this item appears in crafting and processing.

Made from

1× Mixture - step 2(3), 1× Nail beast nails

Sanfew serum(3) price history

Daily averages rolled up per month, newest first.

Monthly average, low and high price of Sanfew serum(3) on the Grand Exchange
Month	Average	Low	High	Volume
October 202612d	16,845	14,869	21,066	18,852
September 2026	14,390	13,293	21,006	50,361
August 2026	15,330	12,602	19,345	44,019
July 2026	15,411	13,089	16,624	47,779
June 202621d	16,281	14,391	21,891	18,565
May 20262d	14,578	13,502	15,654	2,390
April 20261d	14,094	14,094	14,094	1,404
March 2026	16,553	14,443	23,298	26,923
February 2026	14,015	12,074	16,680	16,996
January 2026	11,959	9,799	15,887	17,856

Across 10 months of recorded prices Sanfew serum(3) ranged from 9,799 gp in January 2026 to 23,298 gp in March 2026, measured over 218 trading days.

The 30-day average of 15,614 gp sits around the middle of that range.

All prices in gp. Volume counts units traded across both sides of the Grand Exchange.

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