How Long Can Blood Be Stored in a Refrigerator? Shelf Life of Blood and Its Components

Blood can be stored in a blood bank refrigerator at 2–6°C for 21 to 42 days, depending on the solution in the bag. Whole blood in CPD or ACD keeps for 21 days, whole blood or red cells in CPDA-1 for 35 days, and red cells in an additive solution such as SAGM for up to 42 days. Platelets and plasma follow different rules: platelets stay at room temperature for days, plasma stays frozen for up to a year. All of it assumes a 2–6°C blood bank refrigerator with a recorder and alarm, not a ward or kitchen fridge.

How long can blood be stored in a refrigerator?

Indian law and NACO’s standards line up with WHO and the US FDA on the core numbers. The table gives the Indian requirement first, with the US dating period for comparison.

Component	Storage temperature	Maximum storage in India	US FDA / AABB
Whole blood, CPD or ACD	2–6°C (4 ± 2°C)	21 days	21 days at 1–6°C
Whole blood or red cells, CPDA-1	2–6°C	35 days	35 days at 1–6°C
Red cells in additive solution (SAGM, ADSOL, Nutricel)	2–6°C	42 days	42 days at 1–6°C
Red cells prepared in an open system	2–6°C	24 hours after separation	24 hours refrigerated after the bag is entered
Washed or deglycerolised red cells	2–6°C	Transfuse within 24 hours	Up to 24 hours (open system)
Frozen red cells (glycerolised)	−80°C to −196°C	10 years	10 years at −65°C or colder
Platelet concentrate	20–24°C, continuous gentle agitation	3 days; 5 days with special bags (5 days maximum in the Drugs Rules)	5 days; 5 to 7 days depending on bacterial-risk strategy
Fresh frozen plasma	−30°C or colder	1 year	1 year at −18°C or colder
Cryoprecipitate	−30°C or colder	1 year	1 year at −18°C or colder
Granulocyte concentrate	20–24°C	24 hours	Not covered here

Indian figures come from Schedule F Part XII-B of the Drugs and Cosmetics Rules (as amended in 2020) and NACO’s Standards for Blood Banks & Blood Transfusion Services. US figures come from 21 CFR 610.53 and the June 2024 AABB Circular of Information.

Notice where India is stricter. US rules allow plasma at −18°C; the Drugs Rules require −30°C or colder for FFP and cryoprecipitate. A freezer that is fine for an American blood bank’s plasma may not satisfy an Indian licence.

Why does the anticoagulant decide the shelf life?

The solution in the bag is doing two jobs. Citrate stops the blood clotting. Dextrose (glucose) and, in CPDA-1, adenine feed the red cells so they keep making ATP, the energy molecule that keeps them viable and able to carry oxygen. WHO’s cold chain manual names CPDA-1 as one of the most commonly used anticoagulant-preservatives for exactly this reason.

Adenine is the difference between 21 and 35 days. An additive solution goes a step further: after the plasma is removed, 100 ml of SAG-M, ADSOL or another approved solution “containing saline adenine and glucose (or with mannitol)” is added to the packed cells, in the words of NACO’s standards. AABB’s circular describes additive solutions as a way to extend red cell shelf life, and the Drugs Rules allow red cells in them to be kept for up to 42 days.

So when someone asks “how long does blood last,” the honest answer starts with “which bag?”

Why is blood stored at 2–6°C and not colder or warmer?

Both limits protect the patient. WHO’s manual explains the upper limit first: above +6°C, bacteria that may have entered the unit during collection “may grow to such an extent that transfusion of the contaminated blood could be fatal.” The lower limit matters just as much. Red cells are sensitive to freezing; if they freeze, their membranes rupture and haemoglobin escapes, and transfusing haemolysed blood can also be fatal.

That is a narrow band, and it explains why blood bank refrigerators use fan-forced air rather than the still air of a domestic fridge. A shelf near the evaporator that drops to 1°C, or a top shelf that drifts to 7°C after a door opening, is a problem you cannot see without uniform airflow, a recorder and alarms. WHO lists preset alarm points at +1.5°C and +5.5°C as an ideal design feature, so staff hear about a drift before the blood leaves its range.

How is the expiry date counted?

NACO’s standards count the day of collection as day zero, and a day ends at midnight. Their own example: platelets separated on the first of the month expire at midnight on the sixth. The same convention applies to red cells, so a CPDA-1 unit collected today expires at midnight 35 days from now.

Red cells separated in a closed system keep the expiry date of the whole blood they came from; the time the plasma was removed does not change it. Separate them in an open system and the expiry becomes 24 hours.

How long can blood stay out of the refrigerator?

Not long. WHO’s guidance is built around a 30-minute window: blood issued to a ward is expected to go into the patient within 30 minutes, and if it cannot, it should be kept in an approved, monitored 2–6°C ward refrigerator fitted with a temperature alarm, or sent back to the blood bank. WHO also recommends issuing only one unit of red cells at a time, in a cold box that keeps it under +10°C, unless rapid transfusion of large volumes is needed.

AABB’s circular sets the outer limit for the transfusion itself: red-cell components should not sit at room temperature for more than 4 hours. If a slow infusion would take longer, the unit should be split into smaller aliquots. And once a bag is entered in a way that breaks the closed system, it expires 4 hours later at room temperature, or 24 hours later if refrigerated.

For transport between sites, WHO and NACO both allow processed whole blood and red cells to travel at up to +10°C, for less than 24 hours in WHO’s table. Our portable medical coolers include a 2–8°C mode for that leg.

How long do platelets, plasma and cryoprecipitate last?

Platelets are the outlier. They lose function in the cold, so they are stored at 20–24°C with continuous gentle agitation. NACO gives a shelf life of 3 days for platelets prepared in a closed system, extendable to 5 days with special bags; the Drugs Rules set 5 days as the maximum. WHO’s manual is blunt about equipment: if no platelet agitator is available, platelets cannot be stored and must be transfused immediately, unless the blood bank has a platelet incubator or a monitored room held at 20–24°C. Our guide to platelet storage requirements covers agitation rates and quality checks.

Fresh frozen plasma must be frozen within 6 hours of collection in India and stored at −30°C or colder for up to a year. NACO adds that FFP kept at −60°C or below with continuous monitoring can be used for up to 5 years. The details, including thawed-plasma limits, are in our plasma freezer and FFP storage guide.

Cryoprecipitate is stored at −30°C or colder for up to a year. Once thawed it must be used within 6 hours (NACO); pooled cryoprecipitate made in an open system also has a 6-hour shelf life under the 2020 amendment.

What equipment does each component need?

Each storage band needs its own equipment, which is why the Drugs Rules list them separately for a component-processing blood centre:

Component	Equipment the Drugs Rules list	WinHyCare option
Whole blood, red cells	Refrigerator at 2–6°C with digital thermometer, recording thermograph and alarm	WBC-4V blood bank refrigerators, 108 to 1,008 L
Platelets	Platelet agitator with incubator	WPI-5 and WPI-10 platelet incubators
FFP, cryoprecipitate	Deep freezer at −30°C to −40°C	WDF-40V528 plasma freezer
Faster freezing, long-term storage	Deep freezer at −75°C to −80°C	ULT freezers, −40°C to −86°C

Getting the equipment right is what makes the shelf-life numbers in the first table valid. A red cell unit in CPDA-1 is only good for 35 days if it spent all 35 of them between 2°C and 6°C, and only your recorder can prove that it did.